PROCEEDlNGS O F THE AhlERTCAN ASSOCIATION O F ANATOMISTS FIFTY-FOURTH SESSLOS LTi&er.sity of Pittsburgh, Pittsburgh, Pa., THTJRSDAY, APRIL14, 1938 The Fiftyfourth Session of tlic American Association of Anatomists was called to order by President Frederic T. Lewis. The president annonnced the appointment of the following committees : Auditiiig C'ummittec: Prof. S . I. Koriihauser, Chairman; Prof. Eben J. Carey. SowLimtiity ('oinl.izittce f o r 1 9 ~ 9 : Prof. George L. Rtreeter, Chairman; Prof. Basil c'. H. Harvey, Prof. Pliilip E. Smith. The rest of the session was devoted t o the scientific 1x0,.0 ram. 10.00 A.M. F JXDAI-, APRIL15,1938 12.30 P.X. Biusiness meeting, President Frederic T . Lewis in the chair. The rC;e~1..etar!,-T1.e~~~~ir~r i q o i t e d that the minutes of the Fiftv-third Session iwre 1)rinted in The , h a tomical Record, vol. 68, no. 1 (snpplement), pp. 1-41, iiicliisiw. On motion, secoricled a i d c'arricd, the minutes were approved ;is printed. i) A Al\IERIC.tN .ASSOCIATION O F AXATOXIISTP Balance on hand in ehccking account, December 31, 1936, last audit of accounts ............................ Reccipts from dues and abstracts . . . . . . . . $672.40 737.32 ~~ Total crcdits . . . . . . . . . . . ................. Expenditures, 1937: Postage, stationary, supplies . . . . . . . . .......... $1399.92 80.18 58.1 8 i oxon Trareliiig expenses, wm-ctarv . . . . . . . . . ..................... To la 2 rx11an dltrc res ............... Balance 011 hanil December 31 , 1937, 2nd deposited 111 tlir n a i i ~ e of tlic Arnericau Associatioir of Airatomists i n t h e LinrohiAlliaiire Bank a n d Trust Coinpan.~,Roclicster, i". Y. . . . . . . Sprcial iiiterest accouiit no. 19439, Liiicoln-Alliance Bank Balance December 31, 1936 ........................... Intercst . . . ... ............... .............................. ...................... ........ Hnlniice Deceiirher 31, 3937 7'oltcl ba7cznce 0.80 2:1.70 3i.m 114.(IO 150.00 1.OO 33.80 0.75 691.39 808.53 646.02 10.98 659.00 $1467.53 It will be noted that the eheckiiig account gaiiied $136.13, arid the special account gained $12.98, making a total gain for tlie pear of $149.11. GEORGE IT. Cocms:. Tretxsiircr. R c p o r f of t A c Art reported a s follows : " The undersigiied Auditing Clommi ttec has esamined the accoirnts of the Secretary-Treasul.e1. for the year 1937, and finds total receipts reported to he tliose eiitei*edin the journal, expenditures in accordance with receipted bills, and the balance on hand December 317 1937, in agreement with the bank statement of that datp and pass-book of special account. " [Signed) S. I. KORNHACSER, EREEN J . CAREY. On motion, dilly seco~ided,the i*eports of thc SecretaryTrensiwer and of the Auclitiiig Committee were accepted and adopted. Electioia of Ofliccrs: Prof. R. R. Eensley, Cliairiiiaii of the ('ommittee on Noiiiii~ationsfor 1938, placed the following nominatioiis before the Association : F o r President, Stephen JV. Kansoii ; for F i r s t Vice-President, T. Wingate Todd : for Second Vice-President, Albert Kuiiiz : for SecretarS.-T1.eas;nre~.,Eliot R. Clark ; for Xembers of the Executive C'ommittee, George JJT.C'oriier, The University of Roclieste~yOlof IAarsell,University of Oregon. On motion, sccondeil a i d carried, the Secretary was instruc+tedto cast a ballot for ilie election of tlie above-named, with terms of office as specified iri the Constitutioii of the Association. E!c.ctiui?,of R ~ ~ ~ r c ~ ~ ( ~The ~ tSecretary ~ t ~ ~ j thcii e . ~read, : on behalf of the Executive Committee, the following nominations : Representative 011 the Commission for Standardization of Biological Stains, Professor H. E. .Jordan : Representatives on the Council of the American Association for tlie Advancement of Science, Profs. H a w q E. J o i d a n aad C'harles C'. Xacliliii ; Delcgatc io the Union of Biological Societies, Prof. Stacy R. Guild. The persons proposecl were duly elected, with terms ac, specified in the orders of the Rssociation. X e w M e m b e r s : The Secretary presmtecl the following namec, of persons recoinmeiided by the Esccdulive Conimittec for election to membership in the Association : E I)., Ph.D., D(p(cr1nicrit of Anatomy. Coi"llt?7 I - i r i t c i a i t j g Mt-dical 300 Pork d ~ e .N,r z o Fork City. AFQAH,CIIARLESS., JR., Ph.D., Iiivtrurtor in linatomy, CorizeZZ Cnbiersiiy Nedzcal College, 1300 I'oik Ace., S e w Y o l k BAILLIF, R. N.. Ph.D., Jiistriictor j i i Amtoiny. Lottisinno Stcrle rn r w r s i t y , Mediaal Center, X P WOrleans, L a . RUCHANAX, A. K., M.D., Associate i n Xeurology, S o r t h u ~ s t cI iI r n t t e r s i t y V e d i c a l SckoOZ, ClkZCOgO, Ill. CHASE. RALPHE.! A.M., Instructor i n an atom^, Oklnliorna School, O k ? U h O n l a C i t y , Okla. CONWAY, ELEANOR A., Pb.l)., Assistant in Aimtorn> Thc T7nt Chirccgo, Il7. 4 A M E R I C A N ASSOCIATION O F A N A T O M I S T S CORRIN,I ( a N r ) a L r , R., M.D., Associate Professor of Anatomy, Cn??wsity of Tpnnessw, 3 f e m p h l s , l c n n . COUNT, E ~ R W., L Ph.D., Assistant Professor of ,hatorny, S e w Y n r k ,~Pdzcal Collegr, 450 East 6 4 t h Rt., Xm1 Y o r k Czty. (I'TJRWEN, ALICE o., Ph.D., k3ist:LIIt Professor O f AllatoIIly, Z%OnlCl?l' S J f e d l M l C'ollrqe o f Prnnxjiluantu, Phila-ilclphia, Pa. CUYULY,EUGENE, Ptr.D., land Clknlc, tr~rtla n d Euclid Are., Cleeeland, Ohin. IIEZIPSEY, F;DWA4ED IT., ., Fellow i n Aimtomy, B a r Lord XedicaI School, Boston, Xass. DEXBTSHIRE, A B T H ~ J., R Yh.D., Assistant Professor of h a t o n i ) , W a y n e Un School of Jledrcine, l5i2 St. Antame St., Detrwit, Rfich. PORRIS, FRBNCES, PIID., Xesearch Assistant in Embryology, Pale Onivcrstth School o f Xedictne, N e w Haven, Conn. DKISIIAXE, G R ~ H A XP., Ph.D., Iiistructor i n Zoology, The Zi?ii?~cr,uzlyof Chicuqo, Clricago, Ill. EDWARDS, EDWARD A., M.D., Assistant in Anatomy, Enr?wd Mcdzcal Pcltool, Boston, Mass. ., Assistant Professor of Zoology, Coliimhia C n t w r s z t y , and Surgeons, 630 West 168th St., X e w Yo& City. FORBES, TIIOMASR., Pli.D., Assistant in Anatomy, Jok?u Hopkins M e d i c a l Rchool, Baltimore. M a . HBMXIOND,WARNER8., Ph.D., Jnqtrnetor in Anatomy, 7in Caroltna, Xedical School, Chapel Hill, N . C. HOOKER, CHARLESW., Ph.D., lnstrnctor in Anatomy, P O ~ b'niwrsity P Srhool of Mrdicine, X e w R a i en, Conn. .JAUFS. RALPII G., Ph.D., Instructor in Aiiatoniv, Icaynt. 7JnLwrstty Sclrool of Madicirie, 1517 St. Antoine St., Detroit, 3fich. JOHNSON. MYRAL., €'Ii.D., Iiistructor in Zoology, NniztA CoTZrge, Xorthanipton, Mass. JONES, DATIDS., Pli.D., Iiistructor in Aii:ttornp, Loyc~7uC n Chimgo, Ill. .JOKES, RT'SSELL, Pli.D., Instructor in Aiiatomy, Iw7mnn ! ~ ? i ~ P P ~ , S 1Srhool ~ ~ / of M edicine, Broom ington, Ind. KIMMAN,HA4DLEY, Pli.D., Instructor i n Anatomy, Slunford I:n RNISELT, MELTIN €I., Ph.D., Assiataiit Profewor of hnatomp, Chimugo, Ckicaqo, Ill. KOZELKA, A. TfT., Ph.D., BospiiaT of St. Antlion?/ d e Pndzta, Chicoqo, Ill. gs ,1fci,io~iccla o s p i t n l , Clkica(jo, Ill. LOOSLI, (I'LdYTON G . , Ph.D., M.D., Bt MAGRI-DER,S A X ~ E R., I , PLD., Assist:iiit iii Aiiatomj, C n r n ~ 7 l .IIedzcnl CoZl~qr, P . , IVrn; Yorlr City. 1300 Yor7; T\TAHx, LAUR-4 J., I'h.D., professor of Biology, J74nior C o l k g e of Flat Btrer. E'ht &?k?Vr,Z O . OPPENHC JASE X., P1i.D.. Xatioiial Xr@c~:rrc.h Couiicil Fellow in %oolagy. Cww of Boohester. Rochester, S.H. PFEIFFER, CARROLL A, Ph.I)., Research Acsistant, Dppartnrcii t of ilnatonii/, 1 n ? ~ U n i z w s i t y School of Y P d i e i n P , Nezu Haven. Conic. ROGERS, P m r n V., Ph.I)., As6stmit Professor of Biology, ITarniZfon C O l i C f J P , Clintori, Y. 1 . 5 PBOCEEDTNGS SLLSPFRY, C". E., M.D., C.M., ilrsistant Professor of Anatomy, Q ~ I C C ) ~ ' 7. ~ J~i Biagstnn, Ontario. Canada. SHEFHAN, DON4L, M.E., I).&.,Professor of h m t o n I ~ - ,N e w T o i k Uizevermty, CoTTege of Medtczne, 377 First A t P.. N e w Fork C i t y . S h i F L s E R , GEORGE I<., Pli.D., Instructor in Anatomy, Goltcn~bia Uwizrrszty, CoTkge of Pkymcians a n d 8u?-grons, 6JO mcat 168th St., &-ew Y o r k Czty. SNIDER,RAT S., P h D., Iiistructor in Anatom?, r n sity of Febraslia, College of Z e d w i n e , Oma7ia, X e b . PVOOK,THEODORE, Ph.D., Assistaut Piofcssor of Histology, Syracuse Uniaersity, College of M e d i n n e , Sgmcuse, N . Y . SOLXITZKY, OTHMAR,Ph.l)., M.D., Professor of Anatomy, G m , qrfown Fniverstty, Srhool of ~ i e d t c z n c ,WashingLon, D. 6. ~ ~ Y Y E R FRANCIS R . X.,Pli.D., Instructor iii Anatomy, Coi nr7l X e d i c a l College, I300 Pork Ave., N C WP o r k City. TERN. TULLIO,M.D., Professor of Silatornp, The 177i1versit7/of Padua. Pniliiu, I t a l y . TURNER,CLARENCEI)., Ph.P., Iustructor i n Zoology, ,Tor?71ir.e Medarn1 School, 303 East C7~7cnqoAw., Chtcago, I l l . WASSERMANN, FRIEDRICH, XD., Zollrr Foundation, The U a i i p r s i t y of Chicago, Ghirago, I17. WEISSEXBERG, RICILIRD, M.D., Fellom, The Wifitnr Institute, 36th R f . a n d Woodland Avc., Ylazladclphia, Pa. On motion, clnlp seconded, the Secretary was instrncted to cast a ballot f o r all canclidates proposed by the Executive Committee. Xewzhers d e c m s r d : Tlir Secretary then p n e s c n t d the following statement of the Exmutive Committee: T7w Association has suffered great loss b y t h e dealk, dioiiig t h e g u a t year, of seven mewibers JOSEPH A. BLAKE, born August 31, 18G4, died August 12, 1 9 3 i . Elected t o inembership in 1896. A distinguished surgeon, forrnrily PIofesqor of Surgery in the College of Physicians and Surgeons, Columbia Uniaeruit>, New Pork. HEKRYHONERCOLLINS,born Deceiiibcr 10, 1885, dieit August 31, 1 9 3 i . Elected t o menibership in 19'37. Profewor of Biology, the Uniberuity of Pittsburgh. Investigator of growth and regeneration. WILLIAMM. CONANT, borii 1866, dieil February 18, 1937. Hi4 name appeared in thc first published list of members, I X R O . Honorary Goiisnlting Surgeon t o the Yassarhusetts Geiieral IIorpital. HENRY H. DON.4LDSON, h r l i Xay 12, 18.57, died J a n n a r y 2 3 , 1938. Elected t o membership in 1901. Presirlriit 191G - N l i . Xember of The \Yistar Institute of h a t o r n ? and Biolog). ( A r( solution on t h e death o f Doctor Donnldson is printed i n these miiiutrs.) MILTON J. GREENMAN, boiii J u l i e 14, 1866, rlied April T, 1937. Elected t o nienibersliip in 1903. Diiwtor of Tlir Wistnr Institute of Anatomy and Biology. ( A rrzolution oil the (Yvath of Doctor Urreiiman is printed in thrxe minutes.) HUGHD. REPD,~JOIII March 4, 1673, died Xugust 20, 1937. Elected to membership in 1910. Professor of Zoolog;v, Cornell Unirersit). HAF~RIR E. SASTEE, h o r n Ortolier 1.5, 1Pfi4, died F e b r i ~ i p26, 1936. Elrrteil to membership in 190.5. E tysiciaii in C'hicago. A t 'inTious times pvofrssor in HPI ern1 mediral schools. MembPr.s r.rsigaecl: The Sccretai-J- theii arinouiicetl the resignation of the following members : HCXTLR, Relfast, Irelaird G, W.MCNL-TT,Seattle, Wasliingtoir P. POTTER, Eutte, Montana RICHSKD J1ember.s dl.oppcd: The Secretary tlicn announced the following names diwppecl from the list of mt.mhe1.s on accoiint of non-pa:-ment of dues for tlie past 2 years: E. BARTA, Kiswrda, Hiiiigary J. s. BASTFX,('nmhridge, EIIgkdJld C'. FISHER, Sortlirvesterii Vniversit?C'. \\'. HAZRN, Rlchmoiid, Va. Y.L. il1~1.1 , 1-iiiversity o f hlississippi Paywze?2t to Local Conimittee: I n accordance with tlie policj. adopted by the Association at the Fort~-=tliiid Scssion, i t was moved, seconded and voted that tlie Treasurer be a u t l i o r i z ~ ~ l to pap the sum of $150.00 from tlie general fuiids of the Association to the local committee on arrangements at the Cnircrsity of Pittsburgh, to aid in clefraying the cost of entertainment of the Association during the present meeting. ,!)ucs for f h e y e a r 1938: ~1recommeiiciatioii of thc Esccutive Committee, that clues for the year 1938 be set at oiie dollar per member, was adopted 11)- the Llssociatioii. Place of m . x t w e d i n g : It was announced on belialf of the Esecutive Committee that the next meeting mill be held at Harvard Rledical Scliool, Boston, blassachusetts, April 6, 7 aiid 8,1939. Irhmtatioizal C'owgrpss: Iii rcsponse t o ail invitation from the Anatomical Societj- of Great Britain a i d Ireland to take part in a n Tnternxtional Anatomical Congress to be held in England in 1940, it was uiianimoiisly \Toted to take part. PROCEEDINGS c 1 rsnrg X d n l : At tlic request of President Lcwis, Professor Addison spoke briefly in csplanation of the Fiftieth Anniversary Xcdal bearing the portrait of tlie first president of the Sssociation, Joseph Lcidy. The medallist, the di 6tingaished scnlptor of Pliilaclelphia, Dr. R. Tait McKenzic, is a former member. of the Association. Overcrowdiizg of f h e p o g r a n z : Professor Ktocliard suggested that tlie Executive C’ommittee shoulcl consider seriously ways and means of reducing the number of papers presented at the meeting. The President stated that the E s e c u t i w Committee had already voted t o appoint a sub-committee for that purpose. Reso7utiom regcrdiltg n~ imnl wrirnmtritioii : At tlie rcquest of Professor Danfortli the Association considered a proposed resolulion indicating disapproval of proposed legislation i n California which would harmfnlly limit the use of animals for scientific experimentation. The matter was referred to a committee consistinq of Professors Stockard arid H. 31. Evans and the Secretary. Rcsolutiotzs I A special Committee consisting of Professors Conklin, Hardestp a i d Addison, presented the following resolution, wliicli was iiiianimousl>~adopted : Henry HPrhert T)onaldson died on Jaiiuarv 23, 1938, i l l liis eighty-first year, after 2 very short illness. He WRS born i n Yonkers, N. Y . , 3Tay 12, 18.57 and received his early education a t Phillips Academy, Anrlovcr and a t Yale College. 011 graduating from Talc in 1879 he spent a year in the Scientific School, >)here with R. H. Chittenden lie did his first piece of research, a i d clearly showed evidence of his miusual mental capacities. After a w a r as :i medical student a t the College of Phjsicians and Surgeons, New York, iic n a y offered aiid accepted a fellowship in biology under H. Ncwcll Martin at Johns Ilopkins TJniversity and there entered upon liis loiig career of investigative activitv. He sturlietl abro:rrl with voii Guddeii, Fore1 and Meyiiert. He bccaiiie Assistant Profesqor of Pu’eurology in Clark University, from which positioii he welit t o the ProfessorBhip of Seiirologv a t the newly cstabhshed 1-iiiversity of Chic*ago. Ttiere he wrote his hook, “The Growth of tho Brain,” and outlined the field to which he devoted himself for the rest of his life. I n 1906 Doctor Doiialdsoii became the first director of Research niid Professor of Seurology a t The Wistar Institute of Anatomy, where on a large c o l o i i ~of enperiiiienta.1 aiiinials, albino rats, he and his associates worked o u t under controllrd conditions inany problems coneeriiing the growth of the n e n o u s systerri ant1 of other parts of the body. The results of these sttdiea wcre tlie basis of the book “ The Rot-Data mid Reference Tables,” first etlitiola 1!415, secund edition 1924, and of over 300 scparatc papers. Owing to Doctor 1)onaldson’s activities in Chicago and later i n Philadelphia t h e albino rat has become the most witlelg used l a b o r a t o i ~mammal. 1)oetor Doiialilson %as President of the American Association of h a t o m i s t s i n 1916-1917. I n his presidential address he said, “Were I asked t o name sollie direction in which we might cxteiid our work I should naturally lay weight 011 post-natal growth i n the terms of cell multiplication aiid cell striirtlire, with its mally subsidiary problems.” This is the keynote t o his scieiitifir career. H e had a well defincd plan to mhicli he adhered: many topics \\ere considerecl but all had a bearing upon the main subject, that of growth. Doctor Doiialdsoii was a memher of the original Advisory Eoard of The Wistar Institute, a member of the National Academy of Sciences, Vice-President of the American Philosophical Society aiid a past President of the American Neurological Association. He rcceived the degree of P1i.D. a t Johns Hopkins University in 1885 aiid the honorary Sca.D. from Yale in 1906 slid from Clark in 1937. Oii his eightieth birthday, a, broiize portrait medallion of Doctor Doiialdson was presented t o him by the Universit? of P e m i s ~ l r a i i i aLeiiape Club, of which he had been President f o r tweiit2- years. To his colleagiies Doctor Donaldson was l c n o ~ i ias a man of infinite patience, evnliiess of temper and nobility of character. By this resolution the Aniericwi Association of Anatoinists records its appreciation of the life and services o f Doctor Donaldsoii and expresses its sorrow a t the loss of a charming and helpful associate. A special committee, consisting of Professors Boyden, Herrick, Stockard and &lcClang, presented tlic following i.esolntion, which was uiianimoasly adopted : The Americaii Azsociation of Anatomists ~risliest o express n deep sense of 10s.; in the death of Milton J. Greeiimaii 011 April 7, 1 9 3 7 . Doctor Greenman became a member of the Association in 1903 and serreil American anatomy in a w r y active way from that time uiitil his death. In 1906 he was appointed Director of The T;lri&ir Institute and h e iinmcdiatcly organized a Scientific Advisory Board f o r the yuic1ailc.e of the Institutr. Thc functioning of this Roard and the niaiiiteiiaiice of The TS’istar Institute as an independent institute of anatonly have heeii unique. Dortor Greennian iiot oiily depelopetl a scientific staff at thc Iiistitntc, which before his time hail been only a muscum, but he so011 became convinced t h a t the Institute could render a. great service in aiding the anatomical journals and publieatioiis of this rountry. Thirty y n r s ago, in 1908, five ruorphological periodicals o f national importance were brought together uniler one puhlishing managemeiit a t The Wistar Institutc. Prior to this time the existence of thc journals had depeiidrd upon the efforts of private individuals, and olie of them, the J o ~ r ~ i aofl Morphology, had c e a s d publication in 1903. The owiicrsliip of the journals remained f o r some time in t h e hands of the Journal Trust aiid the Editorial Boards, b u t all haT7e now beeu turiied over as property of The Wistar Tiistitute. The M i t o r s fully appreciate the niany difficult problems which Doctor Grcciiniau solved in carryiirg 011 the publication autl circulation af 9 PIIOCEEDINGS ilie ,journals through tiiiies of 1vorltl war and fin an cia^ stress. Milton Greenman was a dynamic per s o i d i t ? who worked n i t h uutiring mergy for the accomplishmetit, of major yui yoscs-the nelfare of The Wistar Institiite, as he saw it, :mI thc promotion of ailatomicel public~atioiis in this country. His own name \\;IS iiot 1 ~ 1 : t ~fdo r n a r d aiirl hi9 efforts were never directed toward selfish ends. Tlie business session tlieii a d j o i i r i i d ~ ; A T U l l L ) d Y ,A ! P ~ I L 16, 1938 12.30 P.M. A Innsiness session f o l l o ~ ~ ~tlic c d sciciitific sessions of the morning. R cs o 7 21 i i o 12 (, o 1.1 c c rtz i92g n R i nz a1 e . ~ pe r i m p F? t a t i on : Tli e c ommittee appointed at the busiiipss session of April 15th o f e r c d the following resolution, which was unanimously adopted and ordered to be forwarclcd to Professor Danforth : Because the mnintenance of thc public hcslth, the protcetioii oC our children from disease, their growth aiid nutrition, a d the trcatmcnt of illiicss in maturity and old age all depend upoii the progi-es~~ o f medical aiid biological science, the Americaii -4ssociation of Anntomiqt8 believes that aiiy attempt to prevent or limit the 1)roper USP of nniiiidr in the imeqtigation of scientific problems is a threat to the welfare of mankind. Iiistead o f iinpediiig progress hy leg~slative enactment, every effort should be made t o facilitate the adrancement of those ~(ieiicesiipon nliich o u r health and well-being so largely depelid. R c s o t i i t i o ~of opprrciatioii .- The following resolution, proposed by Professor Boydcn, was mianimonslp adopted : The .4inerieaii Association of Anatomists, in session a t Pittsl~urgh,April 14, 15 aiid 16, 1938,HISIICSto a~kiioaledgcits great indebtedness t o Cliaiirellor Bowman :ind to the goreriiiiig boards of tlie Knitersity of Pittsburgh a n d the Mellon Institute, and to the Loeal Committee of the Department of Anatomy, Doctors Donaltlson, Hooker and IIogg, f o r the gracious and effective arrangements t h a t hilw provided so nieinorahle an niiiiiversary. The Acsoeiation exprr.;ses cordial thanks to the Department of Buildings and C+rounds of the liniversity, 11-liicli made it possible to hold our sessions in the great Cathedral of Lrariiing; t o the secretarial staff of the Department of A i i u t o n i ~f o r uiifailing a n d courteous assistance; aiid t o the student body of the School of Medicine, uhose xoluiiteer aid contrihuterl so niiich to the smooth progress of our sessions. There being no fiwtliw busiiicss, thc E’iftj-=fonrth Sessioii was concliided, in tlie afternoon, in a joint sc+ieiitificsessiori with the Americdan Association of I’hysi cal Ll~ithropologi st 8. 10 A M E R I C A N ASSOCIATION O F ASATOAIISTS &IESSAGE E’KOM THE PKESIDELYT O F THE U N I T E D STATES At the Fiftieth Anniversar;v Dinner OIL Friday, April 15th the President of tlie Association, Dr. Frederic T. Lewis, cad the following message received from tlie Presideiit of the TJnited States : The White House Was hi rigt on “TO tlie American Associatioil of Ailatomists I \Fish t o convey my warm congratulations on the completion of fifty :-ears of activity a s a scientific body. “Perhaps j~ours,more than any other scieiitific discipline, combines the rigors of an exact science with the latitude of a biologi cal sci en ce. Ana t om?-, including conipa I’at i\-e anatomy forms the framework on which numerous other scieiices are based. Tliouyh many of your number have been active in fields which a few decades ago may- not have becii thought of, by some, a s explicitly anatomical, yon have maintained cohesion, and in your raiiks a r c numbered leaders in aiiatomical knowledge and discovery. “We continually and vitally need yonr help in maintaining and increasing tlie body of anatoInica1 knowledge available, and the American public will be the gaiiier if ;vour organization will keep intact this history of service. ” (Signed) FRANKLIED. ROOSETW~T. Tt was aririouiiced that tlie following reply, prepared 1-, Doctor Lewis, liad been f o n - a r d e d to the TT’hite Hoiise’. “The President The White House Washington, D. C‘. Mr. President: “Stirred by your message of encouragement aiid cony-atulations, The Amerjcaii Association of Anatomists, celebrating its Fifticth Anriiversary i n Pittsburgli’s Cathedral of Learning, will 1-eiicw its efforts t o meet its biological prohlema. Bfultum adhuc rcstat operis, multumque restabit. “ I n cordial response to your iiiterest in our ivelfare.” F o r the a4ssociatioii GEORGE TIT. CORSER,Xr.crrftrr!y. . XOUKI) TABLE rmrrssmn's l h e P?idormir folrtlol of f e m u l e sezual and repl'odtcct6z;e f?trtctirms i n ninrihr&s . a i d other p r ' l t l l f l t f 9. 9 1 1 attempt to corer hormonal coordination of genital organ3 in sequence as in life. <'hairman, Krlgar Allen. P3 rticipauts : Edgar Mien, G. W. Bartelmea, .T. T. Bradbury, George W. C'oruer. (3. H. Daion, J . €I. Elder, E. T. Engle, W. U. Gardner, C. G. Hartman, E'. 1,. Hisan-, J. E. N a r k e e , W. 0. Nelson, G. van Wagenen. The female inonkc:- lias been studied cateiiaivelj becansz she has menstrua1 cycles like woniau and can be used frerly :IS an experimeiitul animal. X a n y on definite, papers have been presented a t previous meetings of the 12ssociat~o~~ restricted pliase.; of reproduction and associated endocrines. The picwiit Rourirl Table attempted t o s?ntliesixe outstanding poiiits in the sequence in 15-liich they occur in life. Contributors were asked to submit several suhjects (with toj~ical outliues 1 which they might present briefly ( 3 or 4 minutes encli). These weie orientcd in a 'time table' mhich served as agenda, and which was mimeographed and circulated beforehand. Thirty-eight subjects ranging through tiiiie ma,ior events in reprochictive life traced iiicidriits in endocrine control fioiii 1) the acceleration of growth of geiiital organs leading t o adolescence. through 2 ) early meiistrual cycleq without ovulation, 3 ) ovulation, 4)o \ ulatuiy mciistrual cycles, 5 ) mating reactions G ) pregnancy, 7 ) hirth, 8) lactation, aiicl 9 ) menopause. The objectire ~ v a sto surnmarizo briefly and coordinate-n hird 's eye view of the endocrines iiirolved 111 a complete sevunl and reproductive life span. Speakers carried through as planuetl and gave effectit e summaries. Thirty-one of t h e thirty-eight subjects were presented-the monkey \%as carried t o the end of her first pregnancy. Tmo brief intermissions alloir ed some recuperatioil. There >?as not adequate time f o r discussion. A spea ker, although allowed three 4-niinutc periods, sacrificed the continnity he v-oulrl hare had in presenting h1a work a t another session. To be entirely successful wch an effort nould require a reheaisal ! The session prored interesting as an experiment in summarizing an4 voordiiiating a great deal of interesting morphological and experiinental work, bnt such a svmposium is not reconi~neutlcd for frequent ure. T h e lymphocytr. Chairman. Hal D o w ~ r y . Participants: William E. Bloom. Warren H. Lerr-is, HrucP K. Wiseinan, Charles A . Doan, Maurice K. Riclitei. Arthur Kirschbauni. William Bloom opened the discussion wit11 a splendidly illustratcd discussion of the foimatiou of 1) mphocytes, their morphological criteria a n d developmentnl potencies. Experimentr with local infections with B. monocytogenes showed that regeneration of Iyinphocytes is largely lioinoplastie by mitosis o f previouRl7 existing lymphocytes. Howewr, snme transformation of cells of the reticiil~tin t o lymphocytes also occnrs. LyinlJhoblasts and immature 1: rnpliocytes of the rlinical heniatologist are not recognized, €or it was found that all types of lymphocytes can multiply, especially the larger 011e5. All are iinmature iii the sense t h a t they can transform t o dye-storing macrophages, monocytes, arid even granular leukocytes. Variations of niitocho~rdria,ba~sopliilia of c? toplasm, ete., are fuiictionnl variations not conceri~edwith the degree of maturity of the cc11q. 12 d l l l E R I ( X N ASSOCIATION OF ANATOI\lISTS Variations in nuclear p t t e i u are likcuise of little importance f o r clmsification of Iyniphoc? tcs or of the lymphoid stein cells of the clinical hematologists (lymphoblasts, myeloblasts). I u hypcrplastic conditions of lynipllatie organs new nodules may originate froin localized proliferations of I)niplioc> tes in no way related t o changes in the reticulum or vaseular patt(iiii. Colored photographs showed the migration from resseIs t o tissuc injceted with eolloidal dye. The transformation of these lymphocytes t o dye-storing histiocj tes in the tissue removed a t different time intervals could be folloived in detail. This was an important denioiistration f o r the reason that Asehoff and some other pathologists still do not brlievc that lymphocytes ran transform t o the histiocptic type of cell. Warren H. Lewis discussed lymphocytes a n d moiiocytes as secii in tissuc culture. The evidence from his cultures seemed to indicate t h a t lymphocytes and moiiocptes are indepeiident cell types, and that a lymphoq t e never transforms t o a monocptc. Monocgtes survive longer than lymphocytes and m a p multiply in the cultures. The origin of the monocytes in the lvmph iiode transplants was not discussed. The resnlts are contrary t o those of Blooni based primarily on experiments with R. monocytogenes in rabbits. R. R. Wiseman illustrated am1 discussed the types of lymphoid hyperplasia which map acciir i i i human clinical cases. The degree of matiiration which occiirs simnltaneously with multiplication is of importance f o r the resulting hema tological and clinical picture. 1,enkemia occurs when the proliferation of immature cells is accompanied by defective maturation. This view is based on the assumption t h a t immature cells of leukemic type are present in normal human lyniphatio tissues. This paper was suppleinented b! remarks along the same h i e by C . A. Doan. Papers dealing with tEic lymphocvtcs of leukemic mice were presented by Maurice N. Riehtcr and Arthur Kirschbaum. The former brought out the similarities a d differciiccs between leukemic lymphocytes a n d tnnior cells in mice. In most respects tlie cells are similar, but lenkernic cells enter the eirciilntion more readilp and become more widely- disseniiiiatcd than (10 tumor rclls. Transformation of lyniphosarcoma. t o leukemia and \ice versa occurs spontaiicously and experimentally. Leukemic lpmphocytes originate in definite foci and iiifiltrate normal tissues. This is contrary t o the generally accepted \iei\- t h a t lympliatic leukemiz originates a s a spstemic hyperplasia of lymplintic tiqsue. Genetic factors are of supreme importance in both the spontaiieous origin of mouse lrukcmin aiid its transmission hy means of living leukemic cells. The introduced cells survive and undergo leukemic prolifwation crowding nut the normal Iymphocyte9. A. Kirschhaum, reporting on the work t h a t he has becn doing in rollnboration with F. J. Tits, L. C'. Strong and W. I-. Gardner, stated that no oiie type of lymphocyte of lymphatic leukemia can he regarded a s the malianaiit lymphocyte which can produce generalized leukemia or lymphatic tumors. I n certain strains (if mice the immature leukemic cells iipcii t o inatuie cells, n114 tlie leukemic yroliferation may begin in the reticulum. Lpmphoey tes and their progenitors map, thc,refore. become malignant (leukernic or tumor forming) at any stage of their maturation. Of special interest was his statement that immature lymphocytes morphologically identical with the most immature lymphocytes of leukemia maF be present in small number i n the Ipmphatic tissues of normal mice. In leukemia these immatnre cells become very numerous, b u t morphologically they may remain identical with the few immature cells of the normal tissues. Subcutaneous injection of minute amounts of colcliicinc caused the temporary regression of lymphoid tumors and lengthened the life of the inice as compared to coiitrol tumor mice. Kirschbnum aiid his co-workers also noted the transition from lymphoid turnor to leukemia described by Richter. Discussion of the papers of the symposiurii was livcly, and prolonged to such an extent that the session lasted f o r a little more thaii 4 hoiirs. Wiseman questioned the identity of the mouse leukemia n-ith the human disease and tlie opposite view was defeiided by Kirsehbaum. When questioned William Bloom stated that he did iiot believe iii the justification of the division of lympliocyte~ into immature, young and old forms oil the basis of nuclear pattern, haqophilin of cytoplasm, etc., f o r they can all transform to other tqpes of cells. Developmental potentialities are, therefore, of greater iniportance than morphological characters for the determination of the degree of maturity of lymphoid cells. All the papers were well illustrated with laiiterii slides and demonstratioils, arid W. H. Lewis shorTed a motion picture of the behavior of lymphocjtes and monorytea in tissue culture. While it is iiot likely that anyone changed his opinioris as the result of the discussion and evidence prescuted, i t was gciierally agreed that the Rounrl Table and accompan~iiigdenioiistrations gave ari unusual opportunity f o r the presentation of evidence of piogress in hematologiral rewarch and its interpretatiou. Viscrral afferent pa1Iiway.s and m l scnsatio,c. Chairman. J. C. Hmsey Participants: 8. W. Ranson, Olof T,arsell, .T. F. Kouidez, 0.R. Laiignorthv D. W. Broiik, liendrirk Hare and H. G. Wolff. In his description o f the risceral afferent fibers in cerebrospinal nerves, 8. W Railson emphasized tlie fact t h a t their cells of origin are in the dorsal root and cranial ganglia, aiid that they m r y in size from fairly large my-clinated t o unmyelinated fibers. T n support of this, he described experiments on the scnsorp compoiientc: of tlie splanchnic nerves. where degeneration procedures mere used to isolate the afferent fibers. He discussed some of tlie evidence which shows th*, presence of iieurons in the dorsal root and cranial ganglia that may sobservc coiiduction from the C . N. S. t o t h e periphery. I n reviewing the probable function of the receptors iii the lung, Olof Lnrsell suggestcd that tlie reecptors iii the, respiratory portion of the lung a r e chemnreceptors, those in thc vibccral pleura rcspoiid t o rontact f r o m adjacent lohw. the smooth muwle spindles may be stimulatrd by changes in tension, and the endings beiicath the epithelium of the bronchi are tactile receptors. J. F. Norudez described the various types of endings in the heart: aorta, pulmonary artery, the great veins and 'paraganglia, ' and discussed their possible functional signifieanrr. I n hearts of casts, in which all of tlic postgauglionir ueurons had been removed ~ i i ddegeneration had occurred, receptors i n pulmonary veins were absent, demonstrating origin from dorsal root ganglia of uppcr thoracic region. 14 AMERICAR A S S O C I X T I O S O F ,4XATOMISTS 0.R. Langivorthy described a submucous plexus of fibers distrihuted t o blood vessels, freely in conncctivc tissue and t o deeper layers of the urinarp bladder e~ritlrelium. This is derit cd rnaiiily from the sympathetic and, among other things, contains receptors f o r paiii. Xyclinatcd fibers from sacral dorsal root ganglia terminate in arborizntions on Madder smooth muscle. These are stretch recrptors. I n a consideration of analysis of afferent mechanisms, D. ITr. Bronk stated advantages in use of actioii potentials. -4ctivity of recelitors is reflected A B changes in frequency in their afferent fibers and in numbers of receptors rrspond1 1 1 ~ . Several questions were posed, among which were: \ \ h a t are structural adaptations of presso-receptors as contrasted t o chrmo-rrcqtors" "hat are structural ailaptations of some receptors m hich cause thein t o show rapid adaptation while others adapt s l o ~ l y ? Obserratioiis on the qiiestion of reflex mechanisms within sumpathetic chain ganglia wrre described by Iiendrick Hare. Skin galvanic reflex technique and \tring galvanometcr were uscd to study reflex responses in cats' fore pads. His observations, on pads in completely deafferented fore limbs and i n ones in which prrganglionic supply t o stellate ganglia had been broken b p section of thoracic rentral roots, do not support reflex pathways inrolving afferent conduction t o stellate ganglia froni fore limb pads that does not traverse t h e spinal cord. H. G . Wolff discussrd refrrred pain, particularly in region of head. IIe cited cases in which pain producer1 by distension of temporal artrry and of other crniiial vessels mas referred. Evidence was presented to show that abnormal pulsations of certain cranial vessels ransed headache. T I i y sliilrs drmonqtra ted tlic areas into which pain was referred froin pituitary, ryes, teeth, siniises and posterior fossa. Wnlff analyzed several cases of IIeiiry Head and showcd that reference into sensory distribution of 5th cranial w r r e was probablp caused by local inrolvenient rather than hy Frgmental skipiling. aspects of t h e p aq~ld v r r t c h m l c O l ? i ? l l l ~ Cheirnian, A. IT. M e y r , Participants : Gnstave B. Schunke, U l d r r d Trotter, W. E. Chamherlain, Williani W. Grenlich, Walter Sullivan, Adolph Schultz, A. TV. Me)er. Some The interest shown in t h r colloquium on tlic vertebral colunin and pclvis was gratifying t o the participants and hearteniiig t o those devoted t o gross anatomy. The papers presented merr comprised very la1gely of factnal additions t o oiir knowledge of both structiire and function. The observations of Doctor Rchunke o n the de%elopnient of the sarro-ilinr joint5 are fundamental a i d should do much t o dispel the confusion t h a t still esirts regarding the niatter. They rciealed the existcnrc of a (lose parallelism between the develop~nentof tlic cavity in these joints and i n the symphysis pubis. Althongh time did not permit a discussion of the gross nature of the articular surfaces, their frequently interlocking nature was referred to and its bearing on the possible amount of motion stressed. Professor Trotter's report 011 the incidence, nature, and relation of supcrnumerwry articula+ facets i n the sacro-iliac region had a n important bearing upon the question of motion. The f a c t that she fonnd some facets covered only by fibrous tissue, others by such tissue containing some cartilage crlls, and still others covered bp hyaline rartilage, has a n important bearing upon thc genesiu PROCEEDINGS 15 L f these facets. Profespor Trotter further called attention t o the varying ~~icwlenre of thew facets with n g ~ ,sex and race and addcd t h a t attempts t o recognize their presenct i n sliiagrnms had so f a r becn unsatisfactory. The range of motion in the pelvic joints, as revealed by skingrams taken with spccial techniques, w a s considered bp Professor Chambe] lain and threw a revealing light 011 ) ~ o t hthe anatomy of and spmptomatologp i n the saero-iliac regiou. It also lent an interest t o the topic undcr discussion ivhicli i t otherwise might not habe been thonglit t o possess. I t \\as surprising to Icaxn that Professor Chamberlain has developed a techniquc which he felt eiiabled him to recognize so small a vertical displacenicnt a t tlie s~icphysiuas 1 mm. Professor Grculich's eltensile sliiagraphic me:tfiurements of the female pelvic inlct in pimigravid white women and in rvhite niilfiparous student nurses, \uggest that an old tenet needs reesaminatioii f o r he found thc prebailinglg acecptcd form of female pelvis in only 37% of tlie latter, and in 45.5% o f the former. Professor Grenlich further found t h a t labor was less frequently complicated in the unortliodos type of pelvis. P r o f e w n Snlli\ a n referred t o the iuterpretation o f vertcbral anomalies and t o the lack of data regarding variabilit7 iii the chondrogenous centers a s well as t o the occurrence of multiple centers i n cartilages connceted Rith bone repair. Professor Schultz 's discussion concerned numerical vcrtebral variation, the relatix-e length of the various regions in anthropoids and man, and the occurrence of a sacra-iliac promontory. He emphasized the fact t h a t there is no direct relatjol~ between numerical increase and increase in length of the particnlar regiou, or between the erect posture and the presence of A promontory. H e further stated that man and the antliropoids differ from the loi~rrrcntarrhineR not only in pocsessing fewer thoraeolunibnr and caudal, and more sacral vertebrae, hnt also by havmg comparatively Iargcr cervical thoracic and sacral regions and much shorter lumbar regions, mid added that among the primates examined, man has the relatively longest cervical and thoracic regions and the comparatively largest lumbar vertebrae, and t h a t reduction of Pertebrae in certain regions hae progressed farther in some anthropoids than in man. A t the request of the audience tlie chairniaii brieflq prcseiited illustrations of w ha t he believed reprepented functional destruction of the iiitervertebrnl disks, a phenomenon which is more evident i n the loiver cervical, t h e thoracolnmbar and especially i n the lumbosacral regions. H e reported the finding of polished facet3 upon the coapted surfaccs o f the bodies of vertebrae, which he believed cnnld only be due t o attrition between them after destruction of the intervertebral disks. 111 concluding this report, the hrevit?- of which is necessitated bp the conditions of publication, the chairman again takcs occasion t o express his indebtedness t o the participants in the colloquium and also t o Professom Todd, von Etonin, Grant, and Doctor Stewart f o r their amplified comments and discussion. AbIERICdS ASSOCIBTIO?;; O F AKATORIISTS OFFICERS AXD LIST O F JIEJIEERS Oficers President. ............................................. fi'I.EPHl~:?IT W. RASSON F'isst Viue-President.. . . . _ ., _ _. _ . ._ . __..T.WINGATETODD Seoond Vice-President ........................................ A L m m I<C;NTZ Secrotnr?l-Treasziror . . . . . . . . . . . . . . . . . . . ELIOT E. CLARK Executive Committee For For For For tcrm term term term expiring expiring expiring expiring 1939. . . . . . . . . . . . . . ..IXWIs H. IVICED, E I ~ H A R E.DSC.4lvIMON 1940. . . . . . . . . . . . . .HAROLD Ccmmms, GEORGEW. BARTELMEZ 1941. ............... WAYXEJ. ATWELL, GEORGEE. WISI,OCI\-I 1942.. . . . . . . . . . . . . . . . . . . .GEORGE W. CORNER,OLOP L s ~ s n r , Delcgictca to thc Counczl of A.A.A.S. for 19.7s HARVEY E. JORDAS CHARLESC. ~ I A ~ K L I Y Eeprese?i t a t ii'e t o f li e Nationa 1 Reseu tzli Co it 11 cd. 295'7-1 940 PHILIP E. S4fITEi Member of lhe Commission on Standardization of Biologicnl Stalns HARTEY E. .JORD&U C'om m i f tee o n S o i n ma 1 tons f o r 1 9 . 3 GEOKOPT,. STREETER. Ckazininn PIIILWE. S n m I r €3. C. H. HARVET L'oniniift~eon Anatomical Sornenclattire C ~ A R E N C E ;M. JACKSON, Chaivman STEPHEN W. XAKSON ROBERTJ. T E ~ Y 'r. W I S G A ' I E TODD GEORGEW. COREER,Secretary HONORARY XEUBER A. NICHOLAS................................................. .Paris, Pranre MEMBERS ABBOTT,~ Z ~ U D E.,E B.B., C.M., M.D., L.R.C.P. & S. (Edin.), F.R.C.P. (Canada), Assistant Professor of Research Medicine and Curator of Medical Historical Museum, McGill University, Mccfill Medical Museum, 3640 Unzvcrsrly St., Xontreal, Canada. .\BELL, XICHARDC., Pli.D., Instructor 111 Aiiatoiq , r'rcitersity of Pennsyltnwu School of Yedzcrne, Philadelphza, Pa. ABERLE(MRs.) SOPHIE B. D., A.E., A.M., Ph.D., M.D., Superintendent of Pueblo Agency, Research Professor of Anatomy, Cnzverstty of Yew V e m c o , Albuquerque, N e w Vemco. ADAMS,A. ELIZABETH, A.B., A.M., Ph.D., Professor of Zoology, Xount Dolyoke Cotlege, South Hadley, Bass. ADAMS,L. A., A.E., A.M., Ph.D., Associate Professor of Zoology, Cnt?;ersity of Illznois, 401 Vermont St., Erbana, Ill. ADDISON, WILLIAM HENRYFITZGEFLALD, B.A., M.D., Professor of Kormal Histology and Embryology, Scltool of Mrdsczne, U n rsify of Pennsylvunza, Phrladelpkia, Pa. A D ~ I ~ ~ I AH UL O;W , ~R B.,R E D. A . , M.A., Ph.T)., Professor of Histology and Embryology, Cornell Universitij, Stinison Hall, Itliaca, AT. r. ALLEN, EENNETMILLS, Pli.D., Professor of Zoology, University of Callfornla at Los A~igcles,909 Xiehrltorena St., Los Angeles, Calif. ALLEN, E D G ~ R , PLD., h D . , (\%e Prcs. '30-'32), Professor of Aiiatomy, Yale Uiiiversit: School of Medicinc, 335 Cedar Sf.,A-ew Ilaeen, Conn. Ph.D., Associate Professor of Histology and C m b r j ology, a1 Colltge, 450 East 6 3 t h St., iYew Pork City. ALLEN, LANEH., XS., Ph.D., Assistant Professor of Anatomy, Li?iwerszfzg of Georgiu School of Nedicine, Augusta, Ga. ALLEN,WILLARDII.,B.S., MA,M.D., Cntzersity of Rochester, Sclrool of Hedwine and Denttstry, Rochester, A-. B. ALLEN,WILLIAMF., A.M., Ph.D., Head of Department of Aiiatomy, Cnixei-szty of Oregon X e d i c a l School, Portland, Ore. ALLIS, EDWARD PHELPS, J R , C.E., M.D., LL.D., Palms d c Garnoles, Xcrcton ( A . M . ) , Prance. ANDERSEN,DOROTHYH., Associate iii Pathology, Columbia Vnivcrsity ; Assirtaiit Pathologist, Babies' Hospital, 167th St. and Broadway, New P o r k Czty. ANDREW, \+rARRBN, JI.S., P1i.U.. Instructor aiid Rescaieh Fellow ill Ati:itoin.v, Cnweisity of Gporgiu Scliool of Mpdrczne, Augristu, Ga. ANGULOP GONZALEZ, ARMANDO W., A.E., B.S., A.M., Ph.D., Associate Mernbrr, T h e Wistar Instatute of Bnatovny, Woodlund A S P .and 56th St., Phihdelphza, Pa. ANSON, BARRYJ., A.B., A.M., Ph.D., Associate Professor of Anatomy, S o r t h wiestern C'nivermty Xedkcal School, 303 East Chwago A I c., Chicago, Ill. 17 APGAR, EESSIEn., Ph.D., / ) ~ p n i t m c n t of A n a t o m y . Cur n t l l F t i i c c i s i t y Medical Col?egf, 2300 Y o r k A L ~ .X,e i u Pork Ctty. A \ i ’ ~( *~F ~ I~R , L E S S.,JR., PILD., Instructor i n Ansforny, Corictll C? College, 1390 F o r k Ale., S e w Forb P t y . APPLEBY,J. I., A.B., M.B., A.M., N.D., Physician slid Surgeon, Compa11y Surgeon, N. Y . C. & St. L. R. R. Co., l05+ East Mniia St.. BeTlecue, Ohw. AREI-, LESLIE E., Ph.T)., Sc.l)., (Ex. Coin. ’30-’34), Robert Laughlin Rea Profesror of Anatomy, and Chairman of the Division of ilnatomy, -P-ortkatslern Unzz crszty M e d i m 2 scltoo7, 303 East Chicago A t e . , Chicago, Ill. AKMSTRONG, P ~ I L TBROWNELL, P B.S., M.D , hssi3tniit Professor of Aiiatomj , Cornell Uniaerszty Uedtoal College, 1300 Y o r k A w . , N e w P o r k City. $ S ~ E T , L , SYDNEY ARTIIUR, X A . , Ph.D., Professor of diiiiiial Physiology, State C‘ollrge of Agriculture, Coinell Unz%ers$fy,Ithaon, 5. P. ATTERBCEY, R.CTH RAND,A.M., Ph.D., Evngs’ P o m f , Grrnt Xcck, L. I . ATWELL, WAYNEJASON, A.M., Ph.D., M.D., (Exec. Corn. ’37-) Professor of Anatomy, Onirersity of Buffalo School of Medicine, 94 H t g k St., Hzrffalo, 1v. Y . BADERTSCHER, JACOB A., Ph.D., Professor of Anatomy, Indiana University School of hlcdicine, 312 South Fess Ave., Hloominglon, Ind. BACLEY,CIIARLES,JR.,M.D., A s ~ o c .Experimental Neurology, The Latrobe d p t s . , Baltwnorc, Md. BAILEY,PERCIVAL, M.D., Ph.D., Professor of Surger?, The Utzicerscty of C7ztCag0, 95’1 East F L f t y nznth St., Chicago, 111. RAILLIF. R. S., P1i.D.. Instructor i n Anatomy, L o u z ~ ? a n uStnte U’ni~ersity,Xe d tc a l Center, New Orleans, La. RAITSELL,GEORGEALFXED,B.S., hf.A., Ph.D., Professor of Biology, Yale Uiiiversit?, Osborn Z o o l o g z d Laboratory, New Haven, Conn. BAKFR, Dab- I)., M.A., M.D., Assistsilt Professor of Anatomy, L o u i s i a n a State Gizitemity, Medtcal Center, New Orleans, L a . BAKFZ,R. C., A.B., M.A., Ph.D., Professor of Ailatoniy, Departnrrnt of Anatomy, Hamilton Ilall, OklO State Unazersety, Colwrnhus, 07iio. BAKER,ROGERD., X D . , Assistant Professor of Pathology, Duke Unzwrstty, Dicrham, AT. G. HamwrN, WESLEY&fA4NNING, A.B., h.N., M.D., Stinwon Hall, Ithacn, N . Y . BARNAND,JOHNW., M.S., Ph.D., Instructor in Anatomy, Umzersity of Michigan, A n n Arbor, Mwh. BARRIS, RALPH W., Ph.D., Assistant Professor of Anatomy, Geo7ge Washington University Xedteal School, Tas7rington, D. C. BARRON, DONALDH., E.A ., M.8., Ph.l)., Lecturer in Anatomy, Frllom, St. Joliii ’3 College, Depaitnirrit of Anato~n?y,Canibridqf L7-n BARTELMEZ, GFOKGEW., Ph.D. (Vice-Pres. ’39-34, Exec. Corn. ’36-), Professor of Anatomy, The Unzcers.cty of Chiongo, C h i w g o , I l l . BARTSCH, PAUL, E.S., M.S., P11.n.~D.Sc., Curator of MoIIusks slid (‘enozoic I n \ erte, a s h m g t o n , U . C. brates, U . S. A-ationnl M v s ~ u m W BAST,T. II., B.A., Ph.D., Professor of Anatomy, Z7nr of Wisconsin, 308 Sczence Hall, Madison, Wzsc. BATSON, 0. V., A.M., M.U., professor of Anatomy, Department of Anatomy, Graduate School of Medicine, U&erszl?y of Pennsylcania, Phzladelphia, Pa. BAUMGAE~TNER, WIIAIAMJ., A.B., A.M., Ph.D., Professor of Zodlogy, Univcrsitj o€ Kansas, 1209 Ohio St., Lawrence, Hans. LIST O F MEMBERS 19 BEAN,BOBERT BENNETT,E.S., AI.I>., Professor of A n a t o n l ~ ,I7iiivcisity of Virginia, Box 1536, Uniz crs BEATTIE,JOHK, M.D., D.Sc., C o n s e r ~ a t o rof 3111seum a d Director of Rcsearch, Xoyal College o f Surgeons, Lincoln's Inn Fields, London, W.C.2, England. T~EGG. ALEXAWJI!ZS., E.S., M.D., Watcrhousc Professor of Aiiatomy and Dean, Bostcrii Tinix ersity School of Ncdielne, 80 East Concord St., Bosfon, AT0 9s. HENOIT. tTAPQiTS, Il.I)., Professeur iiglt!g6 (I'Histologie, FncUlt@ de .&fede'ClTif?, S t m c b o u r q , Fiuncc. RFCSLEY,ROHE:KTRUSSELL,A.R., M.E., Sc.11. (Recold Vice Prcs. 'OC-'@i, Ex. ("om. '08-'12, President ' 1 8 - W ) . Professor Emeritus of h a t o m y , T h e University of Chicago, Chicago, Ill. BENSLEP,SYLVIAH., ALD., Instructor in .4natomy, Z ) c p a r t n i ~ n tof A n a t o m y , The Gnivsrssty of Chzcago, Choago, Ill. BEST,R. RUSSELL,B.Sc., M.D., Assistant Professor of Aiiatorn~,Assi.;taiit Professor of Surgery, Univcrsity o i Pu'cbraska, College of Nedicine, 527 Z ~ d i c a l Arts Huilding, Omaha, N e b . BEVAN,AKTHURDEBN, M.D. (Ex. Coni. 9 6 - 9 8 ) , Piofessor of Suigery, The University of ('hieago, 122 Soqcth Mzchtgaiz Blod.. Chicago, IZZ. BIGELOW-, ROBEETP., S.B., Ph.D., Professor Emeritus of Zoology a i d Para sitology, Massachusetts Iiistitute of Teclinology, 7 2 Bluhe Rd., Biooktine, 2Xa.w. BISHOP.KATIICRINC SCOTT,A.B., M.D., 1508 La Loma Ate ., Berkeley, Calaf. BLALR,DUXCANM., M.B., Cli.B., D.Se., Profcssor of Bnatomv, P n w e r s t t y of Glasgow. Glasgow, Scotland. BLAIR,VILRAYPA4PIK, A.M., M.D., Piofcssor of Clinical Surgcrv, W'ashingtoii University School of Medicine, Xelropolztan B u d d i n g , S t . Louts, Mo. BLAISUELL, FRANK ELLS\< ORTII,RR., M.D., Emeritus Professor of Surgciy, Bledical Department of Stailford University, Lane Medzcal L i b r a r y Buildang, corner W e b s t e r and Sacramento Sts., S u n Francrsco, Calif. CLIKCOE,HOMER. A.H., M.S.,XD., Professor of Gross Anatomy, E m o r y Uniters i t y , E m o r y , Ga. BLOOM,WILLIAM,B.B., Y.D., Associate Profcssor oP Siiatotny, Department of A n a t o m y , The University of Ghzcago, Chtcago, Ill. BLOOKT, R. P., XS.,Ph.D., Assistaiit Professor in hnatoniy, Uniz'ersrli/ of Mtnncsotn, Mznntupolzs, Minn. HLT~XEKFELD, CH-4ltLES M., Ph.D., XD., Associate Professor of Anatomy, T7nizefs i t y of Ftah, School of Nedirzne, Salt L d e City, Utah. Bouraw, TjA\ ID, S.H., Ph.I)., 31.D.. Kational Research Council Fello\v in Medicine, DPpartmPnt o f A n a t o m y , Unii ersfty of Xichzgan, A n n Ai bor , MLC~L. \ON BONIN. GEEHAIU~T, M.lj., Associate Professor o f Anatomj, University of Illinois, College of Medicine, IS53 W e s t Poll&St., Chzcago, Ill. BOOK,11. H., N.D.. Instructor jn Aiiatoinp, T u f t s College MedtcaZ Sckool, 416 H u n t i n y l o n Aw., Uoslon, Mikss. BOWIE, DONALD J., B.Sc., €'h.D., Lecturer iii Histology, ZcGiZl Unrl ersrty, Montretcl, Canada. BOYD.EDITH, M.D., Assistant Professor of Anatoiiiy, University of LMtnnesota, ACinn~opol?n,Minn. B O Y D E N . ~ D W A E DALLEN, A.hr., P1l.n. ( e x . Corn. '25-'32), Professor of Anatomy, I n s t i t u t e of A n a t o m y , Unaverstty o f Mtnncsottr, Minnmpolzs, ;Ifinn. 20 AATERICAN ASSOCIATIOX O F 1Pr'ATOMISTS BRASHEAK, ALTOX D., M.S., D.D.S., Instructor i n Anatomy, Louzsiana Stat? Unai,ersity, Wpdmul Center, Kew Orleans, L a . BREXER,JOIIN L E W I ~A.K., , M.D. (Ex. Com. '15-'18, '33-'37), Hersey Professor of Anatomy, Harcard Z e d t c a l School, Bostoii, Xass. HROWNNG,\VILLIAhX, Ph.R., M.D., Emeritus Professor of Keurology, Long Islaird College of Medicine, 54 Lefferts P b c r , BI+OOk[yn,S. Y . BRYCE,THOMAS H., M.A., M.D., F.R.S., Emeritus Professor of Anatomy, Univer sity of Glasgow-,l'lw Loanzng, Peebles, Scotland. BITCHASAN, A. R., 31. I).,Associate i n n'enrology, Sorthwestr, / I Gnzterszty xedica7 School, Chicago, III. RUI~LARD, H. Hays, A.M., Ph.D., N.D., Pathologist aiicl Dircrtor of Labotatorics, S t . V m c e n t ' s Hospital, Erte, Pa. ELNTING, CHARLESHEWRY,B.S., &ID., Professor of Pathology, V m t ~ ) s t l ? yof Wisconsm, Servwe MemoriaE Instihite, ,Wadinon, Wise. BLRNS,B. I., ,4.B., A.M., Ph.D., M.D., Professor of Anatomy, Louisiana S f a t ? cal Center, New Orleans, La. RLRNS, HORRRT K., JR.,A.R., Ph.D., Associate Professor of Anatomy, Cnicersbty of Roehestrr School of Hedioine and Dentistry, Rochester, N . P. BCRR, H~ROLDS ~ X T O P1i.D. X, (Ex. Corn. '29-'33), E. IC. H u n t Professor of' Anatomy, Head of the Seetion of Kenro dnatomq, School of Medicine, P a l e University, 333 Cedar St., Iyew H a v e n . Conn. BVRROWS, MONTROSET., A.B., M.D., Phpsiciaii aud Surgeon, Coiisultant Patholo gist, Los Augeleu County General Hospital. Member Senior Staff, Huntington Xemorial aiitl St. L u k e '8 ITospitals, 201 370/th E l IliaZLrio A t e . , Pahudettn, Cult f. BUTCHER, EARLO., A.X., Pli.D., Piofessor of Biology, Hamilton CoZlege. Gri,f%n Road, College 1-5111, Clinton, AT. P. EVTLER,ELMERG., A.B., Ph.D., Professor of Zoolog-, Laboiatory of Coinpnrcz Anatomy, Princeton U n z c e w t y , Pizncetoii, S. J. EUYSE,ADRIAN,A X , Ph.D., Assistant Professor i n Zoblogy, The r ~ i Ilocliester, Rochester, A?. P. CALKINS, LEROYA., M.S., M.D., PIi.D., Professor of Obstetric8 and Gynecology, Cnitvrsity of ~ a l n n mHoxpztal. Kansas City, Ran. CAMERON, ANGI-s L , A.B., M.S., M.D., Ph.D., h-orthuwt Clinzc, X i n o f . S. DaL. C~XPHELL,BERRY,A.R., Ph.l)., Assistant Professor of Anatomy, rnit erszty of Oblaltomn Mrdzcal School, Oklakoma City, Okln. CARDWELL, JOHN C., M.D., Professor of Physiology, Long Island College of Medicine, Science Laboratory, 1 l f Pacapo 8t., Brooklyn, S.P. CAREY, EBEKJ., M.S., Sc.D., M.D., Dean aiid Professor of A4natomy and Director of Auatorriy Department, hlarquette University School of Medicine, C 119 F'. Wzseonsin Are., V a u w a t o s a . Wzsc. CdRPENTJZR, RUSSELLL.. B.S., Ph.D., Assistaut Professor of Anatomy, Collape of Pltysidans and Surqaons, Columbia Unczerxet~j, 630 W'rst 268th St., X P I A Y o r k City. C$RVER, GAIL L., B.E., A.M., Professor of Biology, Mercer Unz?w.vity, Macon, Ga. CASAMAJOR, LOCIS, A.M., XI)., Professor of Xeurology, C o l u m b ~ a Cnitrrsrtg, 630 W e s t 168th St., X e w Y o r k Cttv. CIIAXBERS, ROB~RT, JR.,A.M., Ph.D., R e s ~ a r c hProfessor of Biologp, S e i t Yorb C n t w r s z t y , X c i c Pork City. LIST OF ATEXBERG 31 IIHAKDLBR, SIMON R., A.R., B.M., M.D., Professor of Anatom>, W e s t VVirginen zty School of M e d i e i w , Norgantoim, W . Pa. CIIUN, M.D., Associate Professor of Anatomy, X a l w n a l ;2fetlmzZ College of Shanghai, 373 Ave. Haig, Shanghai, C7iina. C I T A R I P IIARRY ~~, A., B.S., M.S., Ph.D., Associate Professor of Riology (Tissue Cytology, Endoerinologq- and IIistologj ) , Chairman of Department, Washingt o n Square College, A - 6 ~ 1Pork Onicerstty, S e w P o r k City. CHARLES,CECILM., A.B., MA., Ph.D., X.D., Instructor, Ucpartit~ciitof Anatoinnp, ll'nshin g t o n L'nzi Prszty School of Medicine, St. Louis, Mo. C'114SE, RALPII E., h . M , Iiiatructnr in Anatomy, Ol,Zahonzct Fnwerscty Medical School. Oklahoma City, Okla. CHASE. SAMUEL WOOD,A X , A.X., Fh.D., Associate Professor of Histology and Embryology, T e s t e r n Reserze Unitrrsaty, 2109 AdPlbert Road, ClewAand, Ohio. CHILD, CHARLESXANNING, & S., I Ph.U., D.Sc., Professor Emeritus of ZoGlogy, Jordan Hall, Stanford Cniversiiy, Calif. C'IIILLI~GWORTH, FELIX P., 3f.D., Professor of Experiniental Pharnineology, Tufts Medical College, 416 Hitntington Bee., Boston, Mass. CIIOUKE, KEHARSINCH,31.-4., M.D., Assistant Professor of Anatomy, Colorado Tnwersity Medical Scliool, 4200 East A T i ~ t hA w . , Den? er, Colo. < ' H m s T E N s w w , KFRMIT,Yh.D., Assistant Professor of Xieroanatomy, Pt. LOZL~S Unirrrsity School of XerXzrinP, 1402 South Grand Blzrl.. S f . L o u e . ~Mo. C'Lnnti, E:mXhTnR JJNTON, A.M., Voluntary Research Worhcr, Department of Anatomy, .Wedecal Department, Zlnrcersify of Pennsylmnin, Plailadelpkia, Pa. ( ' L ~ R K , ELIOTR., A.R., h1.D. (Ex. Com. '16-'19, Ser. Trras. '38-), Professor of Anatomy and Director of Departiiient of hiiatom?-, Xi~dical IIPpartment, Fnirersaty of Penns~ylcunia,Phtladelphta, Pa. CLARK,SAML., M.S., Ph.D., hl.D., Piofcssor of Anntomp, randerbilt Uqi School of Xedzcine, h7adb.tnlle, Tenn. (.?LEVELAND, RUCKER,Ph.D.,dssistaiit in Anatom?, rundcrbilt Cnu ersity School of Medicine, Sashttlle, T'tnn. C'OBB, W. h10NTA4GUE, M.D., Ph.D., Bssoeiate Professor of Aiiatoiiip, Houard Dnz ccrsily, n7ashington, U . C . C oc, ~ T ~ S LR., E YPh.D., Professor of Iziologp, Fnle Unizcrsity, O s b m n Z o d o g t c d Lidmrctory, Xew Haven, Comn. ~ ~ U H I L LGF~RGF: , E., A.H., M.S.,Ph.D., Se.1). (Ex. Corn. '27-'.?1, Pres. 9 2 - 3 4 ) , K.E.D. 2, Box 77 A , Gaineswlle, Fla. %HX, L 4 ~ , E., r ~ A.R., s ~ N.D., Member, Rockefeller Institute f or Medical Research, X P W YorP Czty, N . P. COLE, ARCHEVAU,A.B., Ph.D., Asrihtaiit Pro or, Auatomy 1)epartmeiit. OniCIIAKG, C'OIE, ELBERT C., Yh.D.,Professor of Biology, Wz7iiams Co71~gr,WilEwmstoion, Xiass. COLE, HAROLD H., Ph.D., Associate Profrssor of Animal IIusbandry, I-niversity of California, and Associate Aiiiiiial Hushandnian, E.rpeizmt-nt Station of t h e College of Agriculture, Dot is, Calif. GXLINGS, 31. R A V M O K D , A.B., M.D., dssoeiate Profemor of Auatomy, Medical College, M'apne Cnivrrsity, 1519 St. Antoine St., Detroit, Xieft. 22 A M E R I C A S ASSOCIATION O F A S A T O M I S T S COXAN, DANA. R.B., A.M., M.D., Assistaiit iil Psychiatry, Johns Hopkins UUIvcrsity, Johns Hopkins Xediwl School, BahinOrP, M d . CONEL, JESSE LEROY, A.M., Ph.D., Professor of Atlatomy, Boston lrniverRity School of Mcdiciiie, 80 E. Concord St., Boston Xass. CONGWN,EDGAR DAvrosoN, Ph.D., Professor of Anatomy, Loleg Isla?id C o l l ~ . q r of HedicLne, 3.50 Henry St., Broohlyn, A-. Y . CONXLIN,EDWIN GR~NT,,4.M., Ph.D., Sc.D., LL.D., Professor Enicritns of Biology, Priiieetoii University, 139 Broadmead Ace., Princeton. W. J . CON1I7.4Y, ELEASOP. h.,PIi.D., Assistaiit iu Lk~iatom~y The y of Clllcuyo, Chicago, 117. COPE~;IXAVER, WILrRm M., A.B., Ph.D., Assistant Professor of Anatomy, CoZlegP of Phiptdans and 8zcigeons, Columbia UnzcPwty, 630 West 168th St., S r w York City. CORBIN, XENDlLL B., M.D., Associate Profwsor of Anatomy. Cnieersity of Tennessce, MenLphi.7, Tenn. CORW,EDWARD LYMAN. A.R., Ph.D., Assistant Professor of Physiology, Oni of Virginia School of Hedwzne, Uni%ersity, Pa. C ~ N R RGEORGE , W.,A.E., M.D. (Ex. Coin. '96-'30, '3%; Scc.-Treas. ' 3 0 - ' 3 S ' , Professor of Auatomy, Ufizuersrfy of Rockester, Crzttentleiz Boztlezwi d , Rochester, N . P. CORNING,H. K., M.D., Professor of Anatomy (retired), Oniuermhy of Brilr, Aimtonizsche Anstalt, B i l e , Pestalozzistr. 20, Switzerlund. C'OUNT, EARLIT., Ph.D., Assistaiit Profcssor of Aiiatoiriy, Xetc. Fw ,7 Xrdicoi College, 450 East 62th St., Arew Fork C r f y . COVKLL, W. P., M.S., Ylr.D., M.D., Associate Professor of Research Xerlicinc. G e o r p Wt'zlliams Hooper Foundation, Sun ,Fraiwi.sco, Calzf. COWIIRY, EDMLND V., Ph.D. (Ex. Com. '26-'30, 1st Vice Prcs. ' 3 4 - ' 3 6 ) . Professor ZS, of Cytology, Washington Unit erstty Medical School, St. L O ~ L20. CRAIGIE,E. HORXE, EA4.,Ph.D., Associate Professor of Cornparatis e Anatomy and Neurology, Department of Bzology, University of Toronto, Toronto, 5 , Canada. CRILE, GEORGE W., M.D., F.A.C.S., Professor Emeiitus of Surgery, Western Reserve Unit rrsity ; Director, Clevelaiid CIiiiic Fouiidatioii ; Surgcoii, Cleveland Clinic IIospital; CZeaeTu'and Clinzc, 93rd and Euclzd, Cleveland, Ohio. CROSBY,ELIZABETH CAROLINE, M.S.,Ph.T)., Profemor nf Anatomy, University of Michigan, Ilrpartment of Anatomy, Utzzverstt?y of Xichzgan, A n n CROUCH, RICH~RI) L., Ph.D., h1.D.. Associate Professor of Aiiatomr, ZZissowrz, C o l t m b m , N o . CGAJUNCO, FIDFX,, M.D., Assistant Professor of Anatomy, College of Medicine, University of the Pliilippiues, 630 Colorado St., Mantla, P. I. CULLEN, THOMASS., M.E., D.Sc., LL.D. (Tor.), Professor of Gynecology, J o h n s Hopkiiis C n i i eruity, Gynecologist t o the Johiis Hopkins IIospital, I'O E. Eager St., Balttmore, Ma. C ~ X M I X SHAROLD. , B.B., Ph.D. (Ex. Com. '36-), Professor aiid Head of Division of Microscopir Anatomy, Tulanr 77nzcersity Medical School, Departnient of Anatomy, Sta. 20, il'cw Orleans, La. CUNNINQHAM,ROBERTS., B.S.,A.hI., M.D. ( E L Corn. '33-'36), Professor of Anatomy, aiid Dean, Albany Xedzcal College, Albanij, S. P. CURTIS, GEORGEM., A.M., PIi.D., M.D., Professor of Surgery and of Surgical Research, Kinsman Hall, Ohto State linirerszty. Columbus, Okto. ALICE O., Ph.D., Assistant Professor of Airatolir:. TTo7non 'R X e d i c a l I"ollegp of Pcnnsillinnta. P h i l a d ~ l p l ~ ?Pa. a, Cr TLT.Y, EUGBNF.,Pli.D., C k w l a n d C!l712C, 9 3 1 d and EucTtrZ A t e . , ClPzeland, 076 DANFORTIi, CHARLESIIASKELL, A.M., P1i.D. (Ex. Coni. '37-'31, Second V i c e Pres. '36-'38), Professor of Anatomy, Stanford Urtiiersitj, GO7 Cabrdlo A L P . , (3c R&EU, Stanford Untversity, Caltf. T J., M.D., I'h.D., Associate Professor of Pathology, George1, School of 1Tedicme, Washinqton, D. C . ., B.S., Ph.D., Awistant Professor of Anatom?, Gto?q r l o w n rnicersbly Sckool of X e d m n c , Waskinglon,, I). C. DARRACII,WILLIAX,A.B., A.M., M.D., Sc.D., LL.D., Professor of Clinical Surgery aud Dean Emeritus of Faculty of hledicine, Collrge of Physieiaris and Surgeons, Columbia Vniversity, 190 Port Washzngton Awe., Xew Pork Ci DART, RAYMOND A., X D . , Ch.M., M.Sc., Professor of Anatomy and Dean Faculty of Medicine, Fniversity of tke Witwatersrand, Johannesburg, Transvaal, Soutk A f i w a . DAVENPORT, IT. A, M.D., Associate Professor of duatomy, A*orlA.zuestern On ~ ~ Medical t y Sckool, Chicago, Ill. DAVIS, CARLL., M.D., Professor of Aiiatomv. T'itiveisitv of hfargland School of hledicine, Lombard and Greene Sts., Baltimore, -3rd. DAIIS, WARRENB., M.D., P.A.C.R., Clinical Professor of Oral Surgery, Jefferson Medical College ; Xaxillo-Facial Surgeon, Jefferson Hospital ; Consulting Marillo-Facial Surgeon, Kensington Hospital and Frankford Hospital; Consulting Otolarjiigologrst, St. Agnes Hospital; 135 s. 18th St., PhzIadeZphia, Pa. DATVSON. ALDENB., A.B., Pli.D., Associate Professor of Zoology, and Director of the Biological Laboratories, Bzologtml Laboratories, Harvard Unreersrty. Cambridge, Mass. n 4 ~ C, A ~ l m o xD., Pli.D., Professor of zoiilogy, Westmznsfer College, Pultolz, X o . DE C ~ R L OJOHN, , M.D., Associate in Topographic and Applied Anatomy, Jefferson Medical College, 1620 S. Broad St., Phtlnddphicz, Pa. D s ~ MATTINGLY, s MARIE, A.E., B.S., M.D., Associate Professor of Anatomy, T u h n e University of L o u w a n a , Kezu Orleans, La, Dx GAFLIS. CHARLESF., A.B., M.D., Ph.D., Professor of Anatomy and Head of the Dcpartnient, C w t P r s l i g of Oklahoma, School of .Wedzctne, O7dahoma City, Okla. DEMPSEY,EDWARD W., Pli.D., Fellow ill Anatom?-, H a r t a i d Xrdtcnl Sohool. Boston, Mass. DEMPSTEE,WILFRIDTAYLOR,Sc.D., Instructor in Anatomy, L'nzz ersitg of X?cktgan Mtdzoal School, Ann Arbor, Mtclz. DERIIYSIIIRB, a R T I I U R J., Ph.D., Assistant Professor of Anatomy, T u y n e Unzuersztrr School of Mcdictne, 1512 Sf. Lintobrie St., Detrozt, Bfick. DETWILER,SAMUEL RANDALL,Ph.B., A.M., Ph.I>., hf.8. (Hon.), (Ex. Com. '30'34), Professor of Anatomy, Department of Anatomy, College of Physicians and Surqeons, Columhtn Fnii it?],630 W e s t 168th St., Xezo Tork City. I)oax, CHARLESA., B.S., M.D., Professor and Chairman, Department of hIedicuw, and Director of Medical Research, Ohio State Cniz'erslty, Xzaaman Hall, Colucmbus, Ohio. DODDS,G I D E ~ NS., A.M., Ph.D., Professor of Histology and Embrqology, West rszty Nedical Schoo!, Y o r g a n t o w n , W . Fa. DOMU,LINCOLN V., Ph.D., Research dssociate i n Zoology, Wliitmaii Laboratory f o r Expciiinental Zodlogy, T7ie C n n e r s i t y of C l m u g o , GRicago, Ill. JOHN C., Ph.B., M.D., Professor of -hatomy, Sclrool of Xedicine, DONALDSON, University of Pittsburgh, Ptttsburgk, Pa. UORRIS,FRANCES, Ph.D., Xesearrh Aclsistaiit i n Embryology, 4-alr Enicci silg Sc7kool of Meazonr, S e w Haven, Conn. DOWNEY’,HAL, A.M., Ph.D., Professor of Anatomy, Cni~ersil!y of N i n n r a o f o Medical Sclaool, Minneapolis, Minn. A.B., MS., M.D., Professor of Anatomy, Department of y of Alabama, Unrrerszt?j, A h . DLJESBERG, JULES, ., Professor of Anatomy, Cn snty of Lzege, 62 qua2 Hatzva, Lacge, Belgium. DUNCAN,DONALD,S.B., A.M., Ph.D., Associate Professor of Anatomy, Univeiszty of Tezas, Gulcestan, Tcx. D u N N , 11. L., BA., M.A., M.B., Ph.D., X D . , Chief Statistician, Division of Pita2 Rtatixticn, Bvrcnn of t7ie Census, Dcparlwzrnt of Conimercr, Washin,qton, D. C. 111 SHANE,GRAR-431 P., PIi.I)., Instructor in Zoology, The C n i w r s i t y of Chicago, Chzrago, Ill. K A R I X , M’II 1 W N R., %’h.D., Cytologist, hTatzonal I n s t i t u t e of Henltla, Waslnngton, D. c. ED\Tr.4RD A ., N.D., Assistant in .hntomy, Hari ard Medacal school. Boston, Mass. EDWARDS, J. GRaHazr, N.A., Ph.D., Assistant Professor of Anatomy, Uuilersity of Buffalo School of Medicine, 6 4 I I i g k St.,Buffalo, h’. P. EDWARDS, LINDENF., E.A., M.S.,Ph.D., A4ssoeiate Professor of Anatomy, Ohio State University College of Xedicine, ~ < L ? J Z & O n Hall. Coltmhus, Okio. ELFTMAN, HERBERT, Ph.D., Assistant Professor of Zoolog), C o h m bta University. College of Physicians and Surgeons, 630 W e s f 16Stli St., S e w Fork Czty. ELLIOTT,RUSH, Ph.D., Associate Professor of Comparatire Anatomy, Olaio G n i verstty, Athens, Ohio. ELYOYN, ADOLPH, 9.N., Associate Professor of Neurology, Colunabia University, 630 W e s t 168th St., h-cw Pork Caly. EMERY,FREDERICK E., Ph.D., Assistant Pro€essor of P h ? sioloa , Unater.d?y of Buffalo, Buffalo, AT. Y. ENDERS, ROBERTK., Ph.D., Biologist, C. S. B d o g t c a l Surwy, Wo7fo and Madison Sts., Baltimore, Md. ENCLE,EARL THERON, A.B., B.M., Ph.D., rlmoriatc Professor of Anatomy, College of Physicians and Surgeons, Colunzbzn O nz iw s it y , 632 West 168th St., New Y o r k Czty. H S A K I , SHIRO, M.D., Ph.D., Member o f Anatomical Institute, E e i o Uniuerszty, Sasukc 666, Eanzakura, Japan. E S S F . N B ~ CJ., M., Ph.D., Associate Professor of Anatomy, Loyola Onireisity School of Medicine, Ckicago, 111. ESSICK.CHARLESRHEIN,B.A., M.D., PO0 Centrc A be.. Eeadiag, Pa. ETKIN, J&rILLIAN, Ph.D., Instructor i n Comyarati\e h a t o m y , C o l k g e of t h e Czlp of A 7 m Y o r k , S e w Y o l k Czty. ED\VARl>S, E~TTINGER, GEOIIGEIJ , M. D,, V.M., Profewor of P’h?siolog~,Q ~ c t ’ i ?’s N f i t vrrsify, KirLgslon, Oirturio, Carcadn. EVANS,HERRRKTM C T ~ E A N , B.S., K U . , 3I.D. honoris csnss, T’reillurg (Ex.Corn. ’19-’2? ; Pres. ’30-’32), Hertzsteiii Professor of EZiologv, Profrssor of Anatomy a i d Director of the Institiite of ~!hpCi~riiciital I?i(lkJgy, (in of Calzfor?zza, B e i k e l e y , Calif. >:VANS, TIIONAS IIORACF, X D . , A ssociste Prof essor of Siiat omy, 11011g Tsland Cnllegr u f Alediciiic ; Research Professor of Aiialomy, Kcw York Mrdiral Collcgr arid Flocvcr F i f t h Axe. Hospital: 3.50 S o u l 7 ~,Val77 SI., Freeport. N . I?. EVERETT, JOIIK W., A.B., Ph.D., Assoclnte in Aimtom>, Duke U n i c e r s i f y School of Hcdzcinc, Durham, N . C . FAXKIIAUSER, GERIIARD,P1i.D.. Assistant Professor of niology, Pnncfton Unzversity, Yrincrton, N . J . FARTS, Hmoev S., A.14 , A X . , Ph.U., M.U., Practiriiig I’h> sictan and Surgeon, 715 S O ’ l / f ! l s/O?lf i l l (’., 7 llcS(JU, .jl”lZ. FERRTS, R ~ R R Y I ~ U R RA.t:., , hl.!)., Profeswr o f Anatnm>- F i i i t r ~ t i ~ sMcdical , St. Ronaii Sf., Ll fut Haiscii, Conn. Ilepartiiieiit, Yale University, E’I(;C;E, P. I€. J., A.R., Ph.l)., A+<Jc rat? I ’ r o f r s w r 01 AllZl~<Jllig, r?t 1 of Marylnnd Mcdtcnl RcWool, h’nllzmorc, M d . FLEXNER, LOliIS nARKIIoTJSE, S.B., M.D., dsso?iatr iii hilatCJili.V, Johns a o p k i n 3 McdtcnZ School, Ilalliniow, Md. FOT~LY, JAMES OWEN, M.S.. Ph.D., Assorintr Prnfcwor of Anatomy, Cniverszty of Alabama School of E’omFS, THO\ i A s K., Ph. 1). RaltiniorP, V r 7 . FORAIAN, JOKATHAN, A X . , M.D., Lecturer 011 Diieases Duc t o Allergy in the Ohio Stalc IJnirersity, 394 East Potcn St., Colwtibus, Ohio. ForisT, 1%.L., D.V.M., I’rotcsqor o f Vetrriiiay- Anatomy, Ioica Btatr College, A mes, Ioicn . FRASER, DORIS a.,Ph.D., Fcllow iu Anatcini:, Cnizcrsil,~/of Pcw~syTcnnicz School of 3fcdic:nr, Ph~l*cddpkza,Pa. FRASSETTO, F a B I O , Sr.D., M.D., Dircctor 12Iitliroiiologieal Institute, Fntvcmsty of Bologna, Bologna, Italy. FRAZEZ, JOHN EEKEST, I).&., F.R.C.S., I’rofessor of Anatomy, l’niversity of Lonrlon, St. Mary’s Hospital XedicaZ Sclmol, London, W., England. FRENCH, H. E., M.S., &l.l)., Professor of Aiintomy and Dean of the School of Medicine, Unzi3ersit~yof North Dakotn, Grnnd Forks, N . Dak. FRRVDENBEKGRR, CLAY H., Ph.D., Professor o f Anatomp, Unit ersity of Ctcth, Salt Lake Gily, Utah. GAOE, SIMONHENRY,6.8. ( E x . Corn. ’(16-’11), Professor of IJistology and Embryology, Erncritus, Slinzson DaZZ, C o r n t l l U a z 7 w x z t ? y , Tthacu, AT. Y . GAMBLE,DEANL., B.S., Ph.D., P r e d e n t , W a r d ’3 Natiiral Science P:stnblishrnent, 302 North Goodman St., Roclieslcr, N . Y . GARCIA,ARTT’RO,A.B., M.D., Profrssor of Anatomy and Head of Departmeut, College of RIedicine, Uiiiversitg of the Philippines, 619 Colorado St., dfanila, Philtppine Islands. ., As4staiit Profess IC Anatonij, Ucpurtnicnt of Scliool of If edzcin r, (‘cda? St., Xc ic H a e r n , C’onn. 26 AITEEICXX ASSOCIATION OF ANATORIISTS GAUNT, ROBERT,Ph.D., Assistaut Professor of Biology, N e w 170rk V n z v c r s t f y , F e w Fork City. GRIST, FREDEKICK I?., MD., As5ociate Professor of Anatom>, Cmversity of Wzsconstn, SciPnce Hall, Madtson, F r s c . GEORGE,RUOGLBS I<LRR, R.A., M.E., D.P.H., Assistant Professor of Anatomy, V m v e i * s i t y of Toronto, T o r o n t o 5 , Canada. GEORGE, WESLEYCRITZ,A.E., A.M., Ph.D., Professor of Histology and Enibryology, Onitersbty of North Carolina Afcdzcal School, Chapel Hzll, N . C. GERSH, ISIDORE, B.S., Ph.D., liistructor in Amtonip, Johns Hopkzns Ale&cnZ School, Baltantore, N d . GET, GEORGEO., B.S., 1f.D , I n charge of Offirr of Cooprrati\e Study of Cancer, U.S.P.H.S., A ssistnii t iii Surgery, .Johns Hoplzins H o s p i t a l , Raltimow, M d . GrLmwr, MAI~GARRT S i i C'B.H A ., IT.A., Ph.Lh, SO8 E . flancotl; St., ,4pp7etor~, W w . GLOHIs, .J. H., H.S., Jf.D., Associate Profeswr of Neuro anatomy, New Pork Univerkity and Rclle>iue Medical Collcgc, I233 Prft7~A t e . , Netu Fork City. GODWIN,MFLLINC., RA., Ph.D., Instructor in Aiiatoiiiy, W r s f Pwginccc University, Kchool of Mrdzrinr, M o i g ( ~ ~ l o w iTi'. i , Va. GOLDsnfIrH, .JOSEPI1 B., M.A., Ph.l)., Associate Professor of Histology and Embry ology, OXlnlr o nia 111 Srliool of Iledicinc, Ohlo71~niaCifi!, O X h . GOODRICH, HUBEETBAKER,B. ., PIi.D., Professor of Riology, W e d r y n i t Unroernzty, Mtddlrtowtz, Conn. Goss, CHARLESMAYO,A.B., M.D., Assistant Professor of Anatomy, College of Physicians aiirl Snrgeoiis, ("olumhia University, 6,711 W e s t ZfXth St., New Pork C'ily. GOIJLD, H A R T ~ EhY T A .K., ~A.M., ~l'li.l)., ~Professor ~ of ~ Biology, iliewcornb Gollrgc, Tutrrne U n GRAPFLIN, ALLAN L., A.B. rofessor of A i i a t o m ~ , V a r i w r d Mcdicnl Sellonl, h'trsfolt, Uass. GRANT, J. C. KOILEAU, M.E., CIi.E., P.R.C.8. (Edin.), Profebsor of S n a t o m y , Bnrverazty of Toronto, Toronto, Canada. GRANT, MADELEINF,P., S B., SLA., Ph.D., Meniber Tcacliing Staff ill Zodlogp, Sarah Lawrence Collrgc, B r o n ~ c z l l e ,N . P. GRAVhS, \$7E,LIA~I \v., hf.D., Professor and Director, Uepartineiit of Neuro psychiatry, S t . Louis Cnii ersit?y School of Med?ctne, St. Louis, Mo. GREENE. ('HARLFS W., A.AI., l'h.l>., Research ProfeSsor of Physiology, Uniiwrszty of Hissorirt, S l f Vzrginta Ace., Coluntbza, Afo. GREENE, EUNICEC., A.M., Research Inrcstigator, Syracuse Fniccrsity Scliool of ,Wedtrine, SyiariLsc, N . P. GREENE,WALTERFARRAR, A.B., Pli.I)., B s s o r i ~ t rProfessor o f Anatomy, Syracuse ColTrqe of Medicfine, 309 Souti B r i d ~St., S?yrarusp, N . 1.. GREEYIIILL,J . P., C.H., M.D., F . A , J'rofcwor of Obqtptrics :rnd Gynecology, Loyola LTiiirersitF hledic:tl Rcliool; Profewor of Gyiircology, Cook County Graduate School of Metliciut ; Attending Gyiiecologist, Cook ('o'ounty Hospital, Suitr 380.5-06 Pittsficld Building, 55 Eost 7Vmhrriglon St., chzcngo, Ill. GRREP, ROY O., MS.,Ph.l)., Instructor, B L O I O I / I M I l,aborafones, Eartaw.? Onzversit!y, Cambt ktge, Mass. GREGORY,WILLIANKING,A.B., A X . , Ph.D., Professor of Vertebrate Palaeoiitology, Columbia ; Cuiator Departmrnts o f C’oniparative Anatomy and Ichthyology, Research Associate in Anthropology and Palaeontology, Ameizcun Miuscum of X a l i u a l History, New York O t y . GREULICII, WILLIANW., Ph.D., Assistant Professor of Anatomy and Director of e t x t y Rcliool of df( (7 tho Adolescence Study Unit, I’olr U Sl., ‘Vrv Htrvtrr, L ’ o Y ~ . GRODINNKY, ~ ~ A N U E L1<.8c., , b m . , 4nwrinte l’rotrsxor of Anatomy, LTniversitg of Nebraska, College of Mediciiw, 681 A*. 5Kllc S l . , O?naka, N e b . GUDEICNATM 11, I*’., l’h.l),, Visiting PI ofe\soi, GI atluatc, Svhool, X i 10 YorX Z~nauersily, K’uslii~igtonS g v n r r Eust, ;Ycic rori: Czty. GUILD, STACYR., A.M., E’h.D., Associate Professor of Otology and Director of Otological Rrsraic*h Lal,tnntory, Johns Hopkiiis University, Johns Hopkina Bospctal, Baltimore, M d . GURDJIAK, ELISHASTFPIIENS, A.X., h1.8., 31,I),€’h.D., , Nruro Surgeon, Receiving, Grace and Providenre Horpitals, 840 1)arirl 7 f h r t n r y Bldg , D r t ~ o i t dfzch. , GUTHFLIE,~ \ ~ A R J., Y A,&, A.M., Ph.l)., Associate l’rofrssor of Zoology, Universrtj of Missoz~ri,Colirmbin, X o . G L T i g u A c H m , AT,AN F., A.R., hZ.T)., ,4suori:itr in Olt)*tetrirs, Johns IIopkins Ciiiversitg, Jl1 Cathe~7mlSf., 12czltiniore. Y d . GUIER, Mimi A t I , P., Ph.D., TAT,.D., I’iofrsmr of Zoblogg, Uniterscty of Nzsconstn, Madison, PFzs. HALL,R ~ K OE., N Ph.D., M.D., 3la1/0 Clinic, Bochcster, Zinn. HALL,EDNUXD K., D.&., Ph.D., Tnvtructor in ilnatomy, University of Louiswzlle Hedical School, Louisvallc, Ey. HALL,E. RAYXOND, Ph D., Assistant Professor of Vertebrate ZoGlogy, Curator of Narnmals, rnlifornza Aft~stwm of V e r t e b r a t i Z ~ o l ~ g yUnzversity , of California, BerXele!y, Calif. HALPERT, B k ~ a M.D., , A of‘ P:ithologp, Louirrasa S t a t e CTaiwrS L t j &f?edlCUZ Celllei, Hani, AETTIUIL W.,M.U., or of Anatomy, r n i v e , s i t y of Toronto, Toronto, Canada. HANIRLEN,E. C., M.D., Associate Professor of Obstetrics and Cpecology, Duke Uaiuersity ScliooZ of .Iledici~~e,l ) i i ~ k u n iN , . G‘. HAMBURGFA, VIKTOR, Pli.D., hssistaiit Professor of Zodlogy, 7 l . ’ u s h i ) ~ g t oU~n z t e r s ~ t y , St. Louis, Mo. H4hlILTON, JAMESB., Ph.D., .4ssistnnt Profcssor of Anatomy, Yalc Onzcersity S c l m ~ lof M ~ t l i c i n r535 , Cedur All., N c w Haven, Conn. HAMLETT, GEORGEW. I)., A.B., A.M., Ph.D., Research Agent, 7.7. 8. Bzologzcal Slirvcy, C u m r g L e Laboratory of I3nibryol(~gg,Balitrtiore, Md. HAMMoND, W A K N N R s., Ph.L)., IllStrnctOr i n AllatoRly, Z’/tZt?,Sfty of N o i l h C‘arolma, Mrdictrl S c k u d , Chaptl UtU, Y . C. I ~ A K A ERNEST V, R., A.K., -4,M., M.D., BU7lLYlr, YO. HANSON, ~ ’ I C A N SBL4IR, A.R., A.M., Ph.D., Associate Director, The RocLefelle? I’oundution, 49 W e s t 8 9 t h St., S e w Y o r L Cztg. HARDESTY, ltwxa, B.B., Ph.D., Sc.D. (Ex. Coin. ’10 and ’12-’15, ’ 2 2 - ’ 2 3 ) , Emeritus Profemor of Ana ncl Head of Departmerlt of Anatom), 8chool of Medicinc, Tuk171e I I t ? / , P. 0. Rtulioii $0, A-rui Orleans, La. 28 A m m I C A N ASSOCIATION OF ANATOMISTS IIARGITT, GEORGE T., A.B., A.M., Ph.D., Professor of Zoology, Bzology Bldg., Duke Unzterabty, Dztrkarrk, N . C. HARRIS,HBNKYA,, M.A., ALT)., B.S., M.R.C.P., D.Sc., Piofcssor of Anatomy, The A n a t o m y School, 1'11~l'ntve? srty, Cambridge, Z n q l a n d . HARRISON, Ross GRANVILLE, Ph.D., hl.l)., Sc.D. (Pres. '12-'14) , Sterling Professor of Biology and Director of Osborn Zoological Laboratory, Pule University, New Haven, Conn. HARTMAX, CARL G., Ph.1). (Ex. Corn. '?9-'3.?), Research Assoriate, Carnegze Laboratory of Embryology, Johns Hopktns Wedical School, Bullzrnore, Md. HARVEY, BASILCOLFNANHIATT, 4.B., hJ.D., Professor of A n a t o i n y and Dean of Studelits, Division of Biological Sciences, The Onivcrszly of Chtcago, Chtcugo, 111. HARWELL, CITARLESW., A.B , M.D , Assistant Professor in Micio Anatorny, Emory University, Eniory, Ga. HATEICIUS, 11-4NS OLIV~R,A.B., M.S.,Ph.D., A s i s t a n t Professor of Pliysiology, Ohro State Uswverszty, Columbus, Ohio. HATT, RORFXTT., P h D , Ihicctor, Ciunb/or,L Tnstitute of S'cienc~,BlooniJieId Htlls, Mech. HAUSMAN, LOUIS, ,4.B.,hl.D., Associate in Neuro anatomy, Corriell Medical Sdiool ; Associate Piofessor iii C1inic:rl Neurology, New York TTospital, 140 E . 54th St., New TorL Caty. HEINBECKEE, PETER, M.D., Associate Professor of Surgery, WualLitigton Uruoei S%ty~V.lrdlcU7~YCkool,h't. h % c Z S , &fO. HEISLEE,JOIIN C., M.D., Emeritus Professor of Anatomy, University of Pennsylvania, 987.9 W a l n u t St., Piirladelphza, Pa. HELDT,T H O ~ I AJ., S A.B , A.M., M.D., Physician in Charge of Division of h e u r o psychiatry, H e n i y Ford Hospital, Urtrozt, Xich. HELLB'F, 0. hl., B.S., N.S., Ph.I)., Assndiate Professor of Biology, New Y o r k Cniversiiy, X e t v York C i t y . HELLBAUM, AKI'HUK.A ., Pli.l)., Assistant Professor of Physiology, G' Oh lnhoma, Soh007 of &I I I C , OklUli6tflU CltlJ, O Z T U , HERRICK, CHARLES J U D ~ O p1i.D. N , (Ex. Coni. '13-'17), Emeritus Professor of Neurology, The Uiiiveisity of Chicago, D c p a i t m ~ n lof il ttatoniy, Tht Unkter s i t y of Chzcago, Chicago, Ill. IIE&TZbER, ARTHURE., B.S., l\.hf., P h D . , M U . , LL.D., F.A.C.S., Professor of Surgery, Fnzversrty of Ea?isus, Enlstead, Eansas. HETHERINGTON, DUNCAN CHARTERIS,A.R., M.A., Ph.D., M.D., Associate Professor of Anatomy, DuLe Uwive?saty Medical School, Durham, AT. C. HEUSFC, CHESTPEH., A.11 , Ph.D , Research Associate, Dcpaitiiient of Enibiyoiogy, Carnegie Iustitution, Johns E o p k i n s M d i r a l Schoo7, Baltamore, M a . HEWSON, ADUINhLL, A.R., A.M., X.D., F.A.C.S., Emeritus Professor of Anatoiny, Graduate School of Medicine, UniLrrsitj of Pennsg IT anin, and Professor of Anatomy and Histologj, Tcrriple Unirersity Dciital School ; Emeritus Surgeon, Menioiial Hospital; Secietnig Aiiatoniical Hoard of tlic State of Pennsjlvania, 257 Soutlk 16th St., Philadelphia, Pa. HIGGIXS, GEORGE X., A.M., Ph.U., Associate Professor of Expeiiinental Biology, Unwerszty of Blnnesota, Z a y o roi1rtdufton, Eoclitsier, ~ V m n . LIST O F XE:I\IBEBS 29 HILL, .JAMES PETEFL D.Sc.. F.H.S., Professor of Embryology, University of London, Cnzwrsity College, Gower St., Londoii. W . C. 1, Eng7ond. HILL, ROBERTT., Ph.D.,Assistaut Profcmor of Anato~ny,Indiaira University, YedicnE School, Bloomzngton, I n d . HILTON,WILLIAMA., B.S., Pb.D., Professor of Zoblogy, Pomona College, Director Laguna Marzne Laboratorg, Clarernont, Calzf. UINES,MARION,A.B., Ph.D., Associate Piofessor of Anatomy, Johns Llopkins ;Wrdieal School. Baltcmore, LWd. ITINSDY,JOSEPHC., M.S., Ph,D., Profewor of Ph: siolog) I Gorncll Dnicersity M f d t c d Colltye, 1300 4 ork A W , New Pork C'itg. HIRSCH,G. CHRISTIAN,Ph.D., Lector, Head of Department of Experimental Histology, Zoologwal Laboratory, T h e Gniverslty, Otrecht, Janskerkhof 3, Holland. HISAW, FWERICKL., A.B., b.N., PLD., Professor of Zoology, B'kdogiCa~ Laboratories, Harvard ~ n i v c r s i t y ,Combridge, Mass. HOADLEY,LEIGH,A.H., Ph.D., Professor of Zoology, Harvard liniversit?l, Cantbrtdge, Mass. HOERR,NORMAND L., E.A., Ph.D., lI.D.,.4ssistant Profrssor of Anatomy, T h e rniacrsity of Chicago, Chtcago, Ill. HOGG,IRA D., B.A., M.A., Ph.D., Assistant Professor of bnatomp, Department of Anatomy, University of Pittsburgh School of Medicine, 627 Hampton Ave.. Wilkmsbztrg, Pa. HOGUE,MARY J., Ph.D., Instructor in Anatomy, Unioersily of Pennsylvania Medical School, Philadelphia, Pa. HOLLINSIIEAD, WILLIAMH., A.B., M.S., Ph.D., Associate i n Anatomy, Duke Uniaerszly School of Yerltrzne, 7Iurham, N. C . EOLT,CAROLINE>I., A.B., A.M., Ph.II., S s s o c ~ a t eProfessor of Biology and Public Health, Simmons College, 88 Ridge Ace., Neviton Centre, Mass. HOOKER, (IIIARLES K., Yh.T).. Tnstructor in Anatomy, Fnle University School of X.ltdtnnr, h e w Haven, Conn. HOOKEK,D A m w o m , M.A., Ph.D. (Ex. Coin. '29-'25), Professor of Anatomy, School of Medicine, Untcerstty of Pittsburgh, PkilSbUrgh, Pu. HOPKINS,GRANT SHERMAN, Sc.D., D.Y.M., Emeritus Professor of Compamtivc. Veterinaiy Anatom), Gornc 17 t'?beaerbzty, Itlzctcn, N . Y . HOSKINS,~IARGARET MORRIS,Ph.D., Sssociatc Professor of Microscopic Anatomy, w i t y Dental College, 477 F m t A t e . , Ketc Fork City. HOWE.,HOWAKD A ., M.l)., Instructor in Anntonij, Johns Hopkins Untversity School of Medicinc, Ualttnzore, M a . HOWELL,A. BRAZIER, Associate Professor of Anatomy, Department of Anatomy, Johns Hopkins M e d i d School, B o l t m o r e , M d . ITOWLAND, RUTH B., Ph.D., Asqocinte Professor of Biology, Washington Square College, X ~ i vYorli Unaversity, Waskzngton S p a r e East, N e w Horl; City. ROY,WM. E., JK..A.R., Ph.D., Professor of Biology and Head of the Department of Biology, Universitr of Soutli Carolina, 2328 Flztat St., Columbza, S. C. H RDI J ~ KALP A, a, M.D., Scan., Curator, Division of Ph) sieal Anthropology, Uneted Stairs h'ational Vuseuwi, Smillrsoniun Institution, R'a,?Rznnton, D. C . HL-RER. JOHN F., M.D., PILD., Associate Profewor of Anatomy, Temple University, Philaddphia, Pa. HUOIISON,WALTER, S.B., M.D., Director 0tologie;d Research Laborator:, '4 bznnton Menoriul Hospztal. Abzngton, Pa. IIT-XXICL, KATHARINE P., Ph.D., 2143 Conzmonzcealtls i l b e . , S t . Pual, Hmn. HUMPHREY,RUFUS R., d.B., A.M., Ph.I>., Associate Professor of 2kiiatomy, School of Medirine, University of Buffalo, $4 H f p h St., Bl l f f a l o , A*. F. HUMPHREY, TPrPfHCNA, M.D., Ph.D., Instructor in duntomy, Onivcrszty of Mtclaigan ,Medzcal Scliool, Ann Arbor, Hick. HUNT, THOMASE., Ph.J>., i\ssociate Professor of IIistology and Embryology. 7Jnvversity of Alabama X e d m l ScWool, Uniccrsity, Bla. HURTER, OSCARB., A X . , A.M., M.D., Professional Lceturer, G c o r g e t o m ~Unirersity, 1835 Elye St.. 3. U.., I f n s l ~ t s g f o rD ~ ,. G . HUTCHINSON, CRANFORD,Ph.I>., Associate, The TVistar Institute, MOTrts B ~ o l o g ~ c a l F a r m , Bristol, Pa. INGALLS, NT. WILLILM,E.S., M.D., Associate Professor of dnatomy, School of Yedicine, W e s t e r n Rcseiwe Einwersity, 9526 Edison Eoad, Cleveland Zelqllts. Ohzo. INGERSOLL, EVERETT H., Ph.D., Associate Piofe\sor of an atom^ , Xerbcnl G o I Z P ~ P of Ptrginza, Bachmond, Va. INQRAM, 1%'. R., Ph.D., Associate Professor of Anatomy, Dcparrtnzcitt of ~t?LUtom!(, S t a t e Cniocrsaty of IotLa, Iowa City, Ioua. JAACKSOV, CLARENCEM., X.S., M D., J,L.U. (Ex. Com. '10-'14, '23-28, S'iec Pres. '16-'17, Pres. '22-'?3), Professor and Director of the Department of Anatomy, I n s t i t u t e of Anatomy, Ontrersity o f l f i n n e w t a , Ml.iznneapolzs, Minn. JACKSON, JOSEPIIL., M.A., M.B , Professor of ,Inntoin:! Cnr.cerszty of Sa.skafckpwan. Saskaloon, Cannda. JANES, RALPHG., Ph.D., Jiistructor in Anatomy, W a u n r L'n~rerszty ScAool of Medicine, 1,512 St. AntoinP St., Detroit. I1Zrch. JEFFEKS,KdTHERIh'E R., Ph.D., Instructor in zoOlog;v, Dttd c Cni?ersify, Dzlrka??~, N . c. JENKINS, GEORGEB., MD., Profcssor of Anatomy and Director of Anatomy Dcpartmcnt, George Washington Onzverszty Xedical School, Washzngton, D. C JOB, TEHSLE T., A.B., M.S., Ph.D., Professor of Anatomy, Loyola Cniwersitg School of Xedicine, 706 South Lincoln St., Chicago, Ill. JOHNSON, FRAKKLIX P., A.M., Ph.D., M.D., Associate Professor of Urology, University of Oregon Medical School, 910 Y e d i c a l Arts Butldmg, Portland, Ore-. JOIIXSON, ME'RA L , Ph.D., Iiistrnctor i n Zoologr, Smttk CoTZtge, S o r t h a n ~ p t o n , Mass. JOHNSON,SYDNEYE., Ph.D., Y.D., F.A.C.P., Professor of Gross Anatomy, Srhool of Mcdieine, University of Louisville, 101 W e s t Chestnict St., Louts uzlle, Ky. JOHNSTOH, JOHN B., Ph.D., Se.D. (hon.). Dean of tlic College of Science, Literature and the Arts, Professor of Comparative Neiirology, Cnwersrty of N z n n r sota, Minneapolis, X z n n . JOEINSTON, THOMAS BAILLIE,Y.E., Ch.B., Professor of Anatomy, rniversity of London, G u y ' s IIospital Nedical School, London. 8. E . I . Enqland. JOIIKSMNE, P 4 U L N., AD., 3i.D.. Physwiau and Surgeoil, ? I u I r y y k BZdg., Eunsas Gtty, Yo. Joh ms, T)A\ ID S.,Pli.D., Iiistructor 111 Anatomy, Loyolo I n i l crs7t?/ Mcd~colSchool, Chicago, 111. JONES,OLIVEFL P., P h D., Assista~ltProtessor of An:ttoniy, School of Xwiiczne, 64 Hz.gh St., E ~ r f a l o A*. , k. JONES, RUSSELL,Ph.l)., Instructor in h u t o m . , Indiani~ Nedicine, Btoomzngton, I n d . JORDAN, HARVEY ERNEST,A h L , Pli.D., ( E x Coin. '18- '21' First Vlee-Pres. '36-), Professor of Histulogy and Enihryologj, Dcparfnient of Medicme, CnaitPrszty of Vzrginia, CliarlottesvilZe, V a . KaaX, ~ E L E SSIrAPIToN. Ph.D., Associate Professor of Zoologr , Tfe77esl~yCollege, Wellrsle?y, Masp. ICaBAT, HEPIAISN. Ph.l)., Iustruetor in PhqsiOlog!, L'71 N i n nmpo 1 is, ,112tin. KAMPMEIER, OTTO FRFDERIC, A.E., Ph.D.. M.D., Professor of Xnatoiny and Henil o f Department, College of Xediciae, C'nicersLty of Illtnois, 18.53 TT. Polk St., Chicago, 111. KAPPERS, COKXET IUS UPIBOARIENS, X.D., Sc.D., L.D.. Director of the Central Institute for Brain Besearch of Holland ; Professor of Comparative Neur ology, Universitp of Amsterdam, Ma.rmt,skade 6 1 , Anzstsrdaw. Holland. KEEGAN,J. JAY, A.M., M.D., Professor of Surgery, rniversity of h-ebraska Collcgc of Nedieine, 1%4 dXedica7 Arts Euzldtnq, Onzaha, ileh. KEITH, SIR ARTIIUR, BI.D., LL.D., F.B.C.S., D.Rc., F.R.S., Master o f EircXaton Browne RPsearclr, Farm, Downe, K e n t , England. KELLOGG, RZRIISGTON,Ph.D., Assistant Curator of Illsmmnls, r - . S. Xatjonal. Xuseum. Washangdon, D. C. KELLY,G. LOMBARD, A.B., B.S., M.D., Dcan aiid Profcesor of Snatorny. ZTn of Georgia, School of Nedicine. Augusta. Ga. KERNAN,JOHXI)., JR., S.B., M.D., Absoeiate Profcssor of Oto Lar"ngo1ogy. Golumbin College of Physiehnu and Surgeons, 103 E u s l 7 8 t h St.. S e w PorL Czty. KERR,A H R ~ R T.,I B.S., M.D., (Ex. Com. '10-'14), Professor of Anatomy and Secretary of Cornell TJniversity l\ledicnl College, CorndI I-nrversity Medzoal College, Itlinca, N . P. KEY, J. ALBERT,B.S hI.D., ClinicaI Professor of Ortliopedic Suigcry, Wash angton rnkcrrsitv, S t . I,ouis, M a . KINDRED, JAMES ERNEW,A.B., A.M., Ph.D., Associate Professor of Histologv and Embryology, lTnizrersiiy of T'irqznia Xedical School, lTnzveryrty, V a . ICING, HELENDEAN,A.M., Ph.D., Xember of Thc Wistar Institute (Experimental ZoGlogp), D i e W t s f n r Instatiite of Ariatoniy, 96th St. azd WQodkZ?ld UP., Phzladelphm, Pa. KING,JESSIE L., Ph.D., Professor of P11>~1ology,Goncltcr Collcgr, Baltimore, M d . KINGERY,ITUGH RICNILLAN, B.B., A.M., Ph.T)., Associate Professor of Anatomy, XclLool of M d i e i n r , l7nirersit!i of Colorado. Denver, Colo. KINGSBCRY, B E N J A l I I N F., A.B., P1i.D.. M.D., D.4c. (Ex. Coin. '20-'?5, Vice Prw. '32- '34), Professor of Histology and Embr~-ology,Cornell University, 2 S o i i f h Ave., Ifhacn, N . 9. KINGSLEI',D. Rf. 31.S.. Pll.D., M.D., Assistant Professor of diiatoni>-, Lozclslunn S t U t P rt /. V e d i c a l Center, h - ~ i rOilcans, La. 32 AMERICAN ASSOCIATION O F ANATOIWISTS KIRKHAM,WILLIAM BARRI,Ph.D., Consulting Director, Museum of Natural History, 220 Stale St., S p t n g f i c l d , V a s s . I<IRBYAN, IIA4DLEY, Ph.D., Tiistruetor in Anatomy, Stanford Uiiiterszty. Cu7if. ~IRSCHBAITX, ARTHI-R, Pli.Jl., AkkYaii<IerRro\\il COX F ~ l l o win L4natomy, Y a l e Dn?z.ersit?/ S r l ~ o o lof ,V~drcine,333 C e d a r St., X e i u H u t e n , Covin. KNISICLY, &TELVIK H., Eh.D., Assistant Profcssor of Anatomy, T7~eUnivel-szly of CklCflgO, CkiCUgo, 111. ENOUFF, R. A., B.A., M.A., Ph.D., Professor of Anatomy, Department of Anatomy, O h i o Stale University, Colzmtbus, Ohio. KNOWER, HENRYMcE., A.B., Ph.D. (Johns Hopkins), (Ex. Coin. ’11-’15, ’24’%), Research Associate i n Biology (Rrtired), Osborn Zoologicnl Laboratory, Fale Unwersity, S e u : L l t r w t i , Coan. Pemnianent adrlrex.: : W o o d s Hole, M a s . KOCH,JOHN C., B.S., M.D., IF5 Euclid B C P . , Eakt, l k t r o i t , XieW. KOFOID, CHARLES hTWOOD, A.B., Ph.U., 8C.I)., IATJ.T)., Prof eSSOr Of ZOOlOgY Emeritus. Rooin 5090, L i f e Seiencts Bldg., University of Cnltfornta. Berkeley, Calif. KORNHAUSER, 8. I., X..4., Ph.D., Profcssor of -4natomy and Executive Secretary, F n w e r s i t y of Louisville, School of V e d i c z n e , 101 W . CBestn?ct St., Louisvall e, h-y. KOZELKA, A. W., Ph.l)., Hospbfnl of S t . dni710?t?~ de Padua, Chicago, 117. KRAFKA,JOSEPH, JR., Ph.D., M.D., Professor of Microscopic Snatomy, Medical Department, U n i w r s i t y of Georgia, Augusta, Ga. KnausE, ALLEN KRAMER,A.B., A.M., M.D., Litt.D., Editor, American Review o f Tubereulosis, 615 N o r t h V o l f ~St., Rnltimore, 3 I d . KREHBIEZ,ROBERTH., M.S., Ph.D., Instriictor i n Anatomy, Untversity of Illilzozn, College of X e d i c i n e , 1X53 W . Polk St., Chicago, 111. KRIFG,WENDELL J. S., Ph.l)., Assistant Professor of Anatom)-, Wcw Fork Uni? erszty, ColIege of Xedicine, New Fork City. KROGNAN,WILTOR >I., I’hJ)., Associate Professor of Anatomy and Physical Anthropology, School of .Wedicine, T e s i e r n Reserve University, Cleveland, Ohio. KROPP, REKJAIIIN, Ph.D., Iiistructor i n Anatomy, an d Research Fellow in Obstetrics, Enit anZ Xedical School, Boston, Xass. KUDO, TOKU-FASU, M.D., Profrssor o f Anatomy and Histology, Iliigata &?dical ColTege, Ntigata City, EcAigo, Japan. KUHLENBECK, IIARTTVIG, hT.T)., Pli.I)., Aeting Professor of Anatomy, Woman’s Xec7ieczl C‘ollegc of Penns?/liania, Philadelphia, Pa. KUNKEL, BEVERLY WAUGH,Ph.E., Ph.D., PI ofessor of Biology, Lafayct te College, E m i o n , Pa. K1iXl7z. ALHEK~II, Ph.D., X.D. (Sccoiin \’ice Pies. ’38-), Professor o f Microanatoinp, St. L o t t j , e ~ t MedzcLti y S C ~ L O O ~1402 , souti1 Grnnd A I Y . , ~ t . Louis, x o . KUTCEIIN, LfRS. HARRIET LEHIUNN,A\.31., ‘ I Tlrt Mapkwood,” Green Lake, @‘IS. L A r H x A x N , ERXST,N.D., A4ssistantProfessor of Anatomy, Uni?iers?t!/of Oklahoma Sckool of Xedtczne, Ol,lahoma Czty, Okla. JJAMBERT. AVERTELDOFLUS, B.S., Ph.D., Professor of Hintologr, State University of I o s a Medical Sehool, Xooiii 360, Mcdtcal /,nborntnrzes Bldg., Z o ~ c aCity, Iowa. L.4K@LVORTHlT,ORTHELLO R., A.B., A.M., XD., Associatr Professor of Scurology, Johns IIopkins University, Jo7iiis Hopbans Hospital, Baltimore. Md.' LARSELL.OLOF, A.M., Ph.D. (Ex. Coin. ,38-), Professoi of Anntonq , Z;iii?iersity of Orrgon Medical School, Portland, Oregox. LaSSEK, d R T H L R A[., B.S., M.S., Ph.D., Jf.D., Professor Of Anatomy, uedical College of t h e S t a t e of Soutk Curoltna, Cliarlcsto~~, S. C . LA TIME^, HOXIER B., A 3 1 , Ph.D., Professor of Anatomy, Jledtrul Sc7iooZ, L'nzwrsztij of Kansas, Lawrcnce, Kansas. LATTA, JOHN S., A.R., Ph. I)., Professor of Anatomy, University of Nebraska, College of Medicine, Forty-second St. and D e w y Are., Oninha, X c b . LAWLESS, JOHN J., &LA., Ph.D., Bssistant Professor of Anatomy, W e s t Ptrginca Onrvemty School of Medicme, Xorgcintou?n, W . Pa. LERLONI), C. P., M.T)., T,nboratotre Past~?crd e I'Insfatuf du Radiuwi, ?G Rue d ' F i m , Parts ( r"), France. LECHE, STELLA&I., B.S., KS., Ph.D., Assistant Professor of hnatomy, Tulane Onwersity School of Xedicine, S e z r Orleans, La. LEE, FERDINAND CHRISTIAN,A.B., M.D., Associate Professor of Surgerj , .7okns Hopkms Hospital, Baltamorr, Md. LEOPTARD, fi*4Mrr-EL, Ph.D., Assistant Profeswr of Zoology, Rutgers I'nisersit?/, A-LU' B / irnswick, N . J . LWI, GIUSEPPF., M.T)., Professor of Anatomy, Onzuersity of Tortno, Istituto anatomzro, ('orso ( I ' A ~ e q l i o6r?. Torino, 7ta7y. LEWIS, DEAN I)., M.D., Se.D., LL.D., Professor of Surgery, Johiis IIopkius Univcrsit5, Johns B o p k z n s Hospstal, Ualfimore, Mrl. LEWIS, FREDERIC T., A.M., M.D. (Ex. Coin. '09-'13, Vice-Pres. '14-'16; Pres. ' 3 6 - ' 3 8 ) , Professor of Compaiati\ c Ailatom?, 17arrard Medzcnl Schooi, Boston, Xass. Lnwrs, MARGARET REED,Research Associate, I k p a ~ t i n e n ot f F;mhr-ology, Carut=gie Institiition of Washington, Joliirs Hopkiirs Xedionl School, Baltimore, Hd, LEWIS, WARREN H ~ R M OE.B., X ; , X D . , (Ex. Corn. '(J9-Jll, '14-'17, Pies. '34-'36), Research Associate, Departrricnt of Ei11b1\ ology, Caincgic Institution of V'nshington, Professor of Ph?siological Anatomy, Johns Hoplizns Zedical Sdiool, B a 7 t i m o ~ e ,Md. LILLIE, FRANK RATTRAY, Ph.D., Sc.D.. Andre\\ MaeLeisli Distinguished Service Professor of Embryology. Department of Zoology (Emeritus), The University of Chieago : Presidcnt of Marme Biologi~alLaborator?., Woods IIole, l\iIass. ; Piesident, Kational AeaclemT of Scienws, T7tc C7iizvcr.sily of Chicago, C h ~ a g o , Ill. Lrwmacx, PAULEUGENE,A.M.. M.D., Professor of Micro anatomy, Emory Medical School, Emory Oniz~erszty, Ga. LINLLL,ERIC ANBROSE,Ch.B., M.D., Professor of Seuropathology, R a n f i n 9 Institute, Cizicersity of Torotito. Canuda. LIPSCHUTZ,EENJIMIK,M.D., Assistaut Professor in Kcurn anatom?, Jeffcrsoii Medical College, 1007 Spruce St., Pliilade7phta. Pa. ("OOK, B.A., W.S., Sc.D., L L D . , Litt.I)., Director, Jucksnn Mcmortal I.nbornto~y, Rnr Hnrbor, X P . LOOSLI,C'LAYTON G., Eh.D., N.T).. h'ilzlngs X~rnor7a7Eospttal, Chicago, IiE. LORD, FREDERIC P., A.B., Y.D., Professor of Ailatom)-, Dar tniozitk Mfdzcal Schoo7, 39 College St., Hanoz'er. S.H . 24 A 3 1 E G I C I N A S S O C I A T I O N U P AXATOXIISTS DE S o , I:~P~TAET,, M.D., Associate, Rockffeller I n s l i l u l r f o r Medical Brsecsrcli, 66tli St., and PorA A v F . ,Neic I ork Cit?y. LOTH,EDWARD, M.D., P1i.D.. I'rofcssor of Anatomy and Director of Anatomical Institute, U m ~ e r s i t yof Warsaw, 5 Clialiibinska Str., TVarsazc, Poland. LOITTREY, LAVSON GENTRY, A.ht., M.D., Director, Jnstitute for Child Guidance, $8 W e s t 5 4 f h St., New York City. LUCAS,ALFREDM., Ph.D., Associate Professor of Zoolog?, Iowa S i a f e College, Ames, Iowa. LucAs, MIRTAMSCOTT, Ph.U., Jlrpartnient of Zaoloyy, Iowa S t uf f College, Ames, Iowa. LYOKS, WILLIAJI X., Ph.l)., Assistant Professor of Anatomy, Z7ntwrsity of Calif o r n i a , h' trlf ley , C a l i f . MACCALLUM, DANIELBARTLETT, S.B., Ph.11., M.l)., Asqociate Prof essor of Anatomy, Unaversity of Southern Culifornaa Medlcal Scliool. Los Angeles, Calif. MACEWEN, EWEN,B.S., N.S., M.D., Professor of Anatomy, Director of thc Anatomical Laborotorirs, Dean, College of Medicine, Z7nicerszly of Iowa, Iowa Czty, Iowa. MACFALL, CLAUDEitl., P1i.D.. Professor of Anatomy, Creiglrto~zXedical School, Orrmha, Xeb. MACFARLARD, FRAXK MACE, A.M., Ph.D., Emrritus Professor of Histology, Leland Stanford Junior Uni~-ersitp; President and Acting Director California Academy of Scirnces, S a n Francisco; 776 Bantu Tnrz St., Stanford lJnz?~erszt I / , Calqf. MCCLENDON, JESSE F., Ph.D., Professor of Physiological Chemistry, University of Minnesota, 216 Millard Ball, 11nwerszty of Yznnesota, Ytnneapolw, Mzna. MCCLUNG,CLARZXC'E E., Ph.G., A.B., A.M., Ph.D., Professor of Zoblogy and Director of the Zodlogical Laboratory, 1'nioersLty of Pennsiylvanza, Phzladelpkia, Pa. MCCLURE, CHARLES FREEMAN WILLIAMS,A.M., Sc.D. (Vice Prcs. ' l O - ' l l , Ex. Corn. '12-'16, Pres. '2@-'21), Professor Emeritus of Comparative Anatomy, Prznceton Wniuerstty, Przncrlon, N . J. MCCO'ITER, ROLLOE.. N.D., Professor of Anatomy, Medical School, University of Michigan, Lakewood B . h'. 1, A n n Arbor, Mech. %?(%LADY, EDWARD, JR., Yh.l)., Professor of wiology, Cnzter s i t g of the Sottilt, Sruunee, Tenn. MCGILL,CAROLINF, A.R., A.M., Ph.D., N.D., Physician, 58 IT. Quartz, Uulle, Mont. MCKENZIE,FREDF., A.M., Ph.D., Asmtaiit Professor of Animal Husbandry, Uniaersity of Mzssouri, Columbia, M o . MCKIBHEET, PALLS., Ph.l)., Sc.D., LL.D. (Ex. Com. '31-'33), Professor of Anatomy, Unw ersity of Soutlrern Cuh.for~iia,Los Angcles, Catzf. MCKINNEY,ROSCOEL., Ph.D., Professor of Anatomy, Howard i'ntversit~y,Wash ington, D. C. M C M ~ ~ ~ CJAMES II, PLATFAIR, A.M., Yh.l)., I,T,.D. (Ex. Corn. '06-'@7, '17- '20, Pres. '@8-'@9), Professtrr EmrrituP of Anatomy, Untverszty of Toronto, Toronto, Canada. MACKLIN,C. C., M.B., X.D., M.A., Ph.D, F.R.S.C. (Ex. Corn. '28-'32), Professor of Histology and Embryology, rn ioe7aity of Ft'estrrn Ontario Medlcal School, London, Ontario, Canada. ?~ACZEAN, EEF~NICE L , A.B.. Ph.l)., Assistant Pmfessoi of Zoology, Departnicnt c ~ Biological f Sciences. Munter C o l k g e , 2 PaiL A t c . . S e a Forb City. MAGATH,THOXr\s RHRD.M.S., Pii.D., M.D., Consulting Phqsician, Clinical Laboratories, N a p u Clinic, a i d Professor of Pathology a n d Parasitology, University of hlinnesota, Xayo Clinic. Rockestc r , Y i n n . M A G O V H. ~ . W,, Pli.D., hssistaiit Professor of Scurologj , Institutp of Xeurology, Sorthwr,rtri 11 Z-nzz ersity Xedical School, Clii~xcgo,III. MAGKL-DER, S ~ V L LR., L Ph.D., Assistant in A ~ i a t o i i ~ ?Co~7iclZ , Xfdic'al Collcg?, 1300 1 orL A i P., S-ew r o r h C i t y . MATKLAND,DOXALD.M.B., C'h.R., D.Se., F.R.P.E., Drpaitmrnt of dntctomg, Uallioztsie 0 n i z . c r s t l y, H a l i f a x , N o t a Scotta. Ca?iuda. MALONE.EDTAEDF., A.B., 11.1). ( E x . Com. '31-'3.5), Francis Rrunniiig Professor of Anatomy, Unzverszty of Cincinnati, College of Uedzone, Eden Awe., Ctnnnwati, Ohto. MAXMJN,CHARLTSS., A.B., M.D., Professor of Anatom>, University of North Cmolina, ,510 Ens1 Franklin Bt., Chapel Hill, N . C. MARK.EDTTARD LSURLPITS, Ph.D., LL.D., Hersey Professor of Anatomy (Emeritus), IIanard Universit?, and Trustee of the Bermuda Biological Station f o r Rescarrh, Inc., 109 I r v i n g St., Cumbrzdge, MUAS. MARKLE, J. E., Ph.D., dcsociate Yrofmsor of 9nntoni>-, Stanford Unti ersity, S t a n f o r d , Calzf. SfARSIIALL, CLYDE. N.D., Assistaiit Professor i n r2natom>-, Yale University School of Medicine, 333 Ccdar St., S r u i Haven, Co?tn. MARTIP;, CECILP , M.A., M.B., D.Sc., Protessor of A n a t o r r i ~ ,XcGi7l Ontze,.szt~y, Montreal, Canada. MASON, KARLE., Ph.D., Associate Professor of Anatomy, Ynnlclcrbtlt Dntverstty ?Lettical Sclrool. Nasliztlle, Tcnn. M a ~ n x .EDIT-ARD IT., M.S., M.D., Instructor i n Surgery-, St. Louts llniversity HiPdicOl sch007, st. h t C l S , M o . MATAS, RVDOLPH,X.D., LL.D., Sc.D., F.R.C.S. Eng. (hon.), Yrofcssor of Surgery (1894-1927), Emeritus (1927-), and Demonstrator of Anatoriiy (1885-1894), Tulane University, 2Z55 St. Chnrles Bee., A7rw Orlpans, La. MATTIIEWS,SANT-EL &4., X.A., Yli.D., AsGstant Professor of Biology, Williams College, W i l l m n s l o i c n . Xmn. MAVOK,JAMESWATT, H.A., M.A4.,Pli.D., Professor of Biology, mnion College, Schenectady, AT. F. MEAT,, HAROLD'FLPPFR, E.A., N.S., P11.n.~ Prof cssor of Biology, L?mestone College, Gafffncy, S. C. XEADER. RALPH G.. Ph.D., Assistant Profesqor of Bnatomy, P a l e University School of Mcdieinc, 333 Cedat St., S t w Hazea, L'ona. MEAKER,SAMUEL R., A.B., XI)., M.R.C.S. (Ehg.), F.tl.C.S., F.C.O.G., Professor of Gynaecology, Boston University School of Medicine, 475 Commonmralth Awe., Boston, Mass. ME?UDELSOHN. %'ILLI4XCI, M.S., N.D., Resident Siiigeon, X t . Sinat Bospital, Cleve land, Ohio. METTLE+, FREDA , , A.B., A.M., MU., Ph.l)., Associate Professor of Anatomy, > - s ~ l !of j Georgzn 3 1 f t l i m l School, Atrgzcstrc, G o . 36 AMERICAN BSSOCIATIOK O F ASXTOJIISTS MZEYER, ADOLF,M.D., LL.D., Professor of Psychiatry and Director of the Henry Phipps Psychiatric Clinic, Johns Hopkins B o . ~ p l t a l ,Baltzmore, Md. MEYFX, A m H u n W., S.B., M.D. (Ex. Corn. '1 !2-'lti, T-ice-Pres. '24-'2.5), Professor of Anatomy, Leland Stanford Junior University, 121 Wawerly St., Palo Alto, CaZzf. MEYER, ROLANDK., A.E., Ph.D., Assistant Professor of Zoology, Department of Zoology, Cniversrty of 7Viiconsm, Xadison, Wzs. NICHELS,NICHOLAS A., MA., D.Se., Bssoeiate Professor of Anatomy, T h e Ranael Baugk Iiiststute of Anatomy, Jefferson Jledical College, Phdadel phia, Pa. MIDLO, CHARLES,M.D., -4ssistant Profmsor of Anatomy, Louzstana State U ~ L wersity, Medacal Center. i v c v ~Orleans, La. MILLSR, RUTH ALEXANDRIA, A.B., Ph.D., Instructor in Anatomy, College of Physicians and Surgeons, Colunibia University, 630 W. 168th St., New! l'ork Ctty. MILLER, SHIRLEYP., A.R., A.M., Ph.D., Assistant Professor of Anatomy. Anatomzeal Insttiute, Uniuersatg of Uinnesota, Ytnneapolts, M l n n . MILLER,WILLIANSNOW,M.D., Sc.D. (Vice-Pres. 'O8-'W), Professor of Anatomy (Emeritus), University of Wisconsin, 2001 Jefferaon St., Nadason, P i s . MOODY,ROBERTORTOX,B.S., M.D., Emeritus Professor of Anatomy, University of Cdifornia, Z826 Garber St., Bi'Tkdey, razz f. MOORE,CARL R., ,4.AI., Ph.D., Professor of Zodlogy, Hiill Zoological Laboratory, l h e Uniiiermt?y of Chzcugo, Chicago, 111. ~ I O R G ~LAwmKm N, OKIS, A.B., A.M., Ph.I>., Associate Professor of Anatomy, UiniaersPty o f Cincinnati, College of Medicine, Eden Ave.. Cincinnati, Ohio. MORRILL,CHARLVSV., A Jl., Ph.D., Associate Professor of Anatomy, Cornell Unwersatz/ Medical College, 1300 Pork Ave., F e w Pork C i t y . nfORl'EKSEN, OI'TO d.,E.S., X.D., Associate Professol of Anatoniy, Cniziersily of Wisconsin, $fadison, W7s. RTORTON, DUDLEYJOY,M.D., Associate Professor, Department of Anatomy, College of Physzctans and Surgeons, Columbia Cniverszty, 610 Vest 168th St., New Pork City. MOSSMAN, HARLAKD W., Ph.D., Associate Professor of Bnatomg, Science H a l / , Oniversrty of Wisconsin, Y a d t s o n , mu. hiYERS, BURTOXD., A.M., M.D., Professor of Anatomy and Dean of the lndinna University School of Medicine, 4?4 Iv. Valntit St., Blooniington, Ind. MYEBS, J. ARTHUR,M.S., Ph.D., M.D., Professor of Preventive Medicine and Chief of Chest Clinic, C n i u ~ ~ s a of t y Xinnesota Yedical School. Ntnneapoll9, Ninn. NACHTRIFB, H h N R Y FRAKCIS. R.S., Professor Emcritus, L\nimnl Biology, University of Minnesota, 2443 Cedar St., BerBeley, Calif. NAHM, LALK A J., Ph.D., Professor of Eiology, J m i o r College of Ic'lnt R i t w , Flat Itruer, N o . NARAGAS, JUAN CANCIO,M.D., Professor of Anatomy, College of Medicine, University of tlic Pliilippincs, 719 Plorzda St., Mantla, Plnltppine Islands. FEAL, HERBERT VINCENT,h.X, Ph.D., Sc.D., P r o f ~ s s o rof Zodlogy, Tufts College, TuftsCollege, Mass. LIST OF MEMBEEtS 37 NELSON,WARREP\' O., A.B., Sc.M., Ph.D., Professor and Head of tlic Department of Anatomy, W a y n e Eniversity, SolLool of N e d i c ~ 151? ~ , St. Antoine SI., D e l r m t , Mach. NICHOLAS, JOHN SPANGLER, M.S., PIi.D., Bronson Professor of Comparative Anatomy, Osborn Zoiilogical Laboratory. Y a l e Fniverszty, Xezv Hauen, Conn. NOBACK,GTXTAVE J., E.S., MA.. Ph.D., Professor of Anatomy, New York University, 477 First Ave., ileu! F o r k City. NOBLE,GLADWYNK., A.B., M A . , Ph.D., Curator, Departments of Herpetology and Experimental Biology, Amerzcan Musetim of A7af?kral Rzsfory, 77 th St. and Central P a r k West, X E W P o r k City. KOFIDEZ,JosC P., X.S., Sc.D., Professor of Anatomy, Cornell T'iiiversity RIedicnl College, 1300 Pork due., iVew P o r k City. NOERIS, H. W., A.B., Sc.l)., Research Professor of Zoology, Grinnell College, Grinnell, Iowa. OBENCHAIN, JEANETTE B., Ph.D., Rcscareh Associate, Department of h a t o m y , The Oniaerszty of Chicago, Chicago, Ill. O'DONOGHTJE, CIIARLESH., D.Sc., F.Z.S., F.R.S.E., Render, Department of ZoBlogy, Oniwerszty of Edznburgh, Scotland. 0 'LEARY, JANESL., Pli.D., M.D., Assistant Profes5or of Cytology, Washington Cntcers.ity School of Xedlczne, St. Louis, X o . OPPCNIIEINER,Jaxc M., Ph.D., Rational Research Council Fellorv i n Zoology, O n k e r s i l y of Bochesler, Bochmltr, N . P. OSTERIJD.HJALMAR L., A .E., A.M., P1i.D.. Professor of Anatomy, Xedical Collegr of Virgznia, Kichmond, Va. OVFXHOLSER,MILI'ON D., A X . , A.N., Ph.D., M.D., Professor of Anatomy, and C'hairman of l)epartment, Unirersrty of iVissouri. Colitvibia, No. PAFF,G ~ R GH., E Ph.D., Assistant Profcssor of diiatonij, Long Island Colle,qe of Medzcine, 3.50 H e n r y St., Bvooldyn, N. Y . PAINTER-.THEOPHILTiS S., Pli.ll., Sc.D., Professor of Zoo1og.v. Dep:rrtnient of Zoology, Unzue~sztyof Trxas, Austin, Tezas. PALMER, CARROLLE., M.A., Ph.n., 111.1)., Medical Ofiieer in Charge, Office of Child Hygiene, 77. S. Public Health Service, W a s h m g t o n , D. C. PALMER, DWIRIIT If., E.Rc. M.Sc., M.D., Assistant Professor of Anatomy, Ohio S t a t c Uniccrsit!y, Co7unlbzcs, O l i ~ o . PANKRATZ, DAVIDS., A.R., A.M., Ph.D., 917 East 56th St., Chzcaqo, Ill. PAPANICOLAOU, GEORGE N., Ph.D., M.D., Associate Professor of Anatomy, Cotrtel' Lrnz?wrszty Xedzcal College, 1 S O O Fork i/?ie., Xrzr P o r k Clty. Y a r ~ z J, A Z ~ EW7'ah S C"ESL-4.3, B.A., M.D., Profeesor of .2iiatom>-,Cornell Yly, Itizaea, N . P. PARKER, ALICE E., Ph.D., Instructor in Anatomy, Cnirerslty of Colo/ut?o School of Medzcine, Denver, Colo. PARKER, GEORGEHOTTARD, D.Sc., Professor of Zoologj, Emeritus, llaroard University, 16 Berkeley S t . , CanLbridgP, Mass. PARKER, RAYNOND C., B.A., PIiB., Associate of the Rockefeller Institute, 66th 8t. and Pork Awe., NPWP o r k City. PARKES, A. S., D.Se., P.R.S., Member, Fatiorml I t u t e f o r AXedzcnl Reseajeh, Eampstead, Londorc, hT.W. 3, Ewgland. YATTEN. BRADLEY MEREILL, A.Jf., Ph.D. (Second Vice Prcs. '34-'36), Professor of Anatomj, r n i e e r s 8 t y of Mwhagan, A n n Arbor, Nzch. PAITF&SON, JOHK THONAS,B.X., Ph.D., Professor of Zoology, University of Texas, 1908 Pltff S t . , Austin, Texas. PEAKSON, A N ~ H O U Y A., &LA., Ph.D., Associate in Anatomy, Loyolu 'Unirersify c, 706 South L n c o l n St., Chwago, 117. Y E N C H A R Z , RICHARD I., I'h.D., Scenic Ace.. San x a f a e l , Calif. PERKINS, ORNAN C., A.B., A4.Af., XV., 1'.A4.C'.P.,Professor of Xeurology, Long Island College of Medicine, 819 Carro71 St., Hrooh(?/n, N . Y . PBEIFFER, CARROLLA., Ph.D., &search A m s t a n t , Departnient of A n a t o n ~ y ,Yale UniveraiIy Scliool of Jftdicine, N e w Bai en, Conn. PIERSOL, %'ILLIAX HUNTER, B.A., M.B., Professor of Histology and Embryology, Unitersity of Toronto, 35 Dunvegan h a d , Toronto. Canada. POHLMAN, AUGUSTVSG., RIB. (Ex. Com. '32-'36), Professor of Anatomy, Creighton Cniversity, Omaha, K e b . POLYAK, STEPHEN, M.D., Associate Professor of Anatomy, Department of Anatomy, The Cnicersity of Chicago, Chicago, IIZ. POYNTER, CHARLESW.IL,B.S., N.D. (Ex. Coni, '19-'22), Professor of Anatomy, and Dean of the College of Medicine, University of Nebraska, Forty-second and Dpmey Aw., Omaha, Neb. PRATP,JhAN P A U L . 3r.D., Surgeon in Charge of Division of Gynecology and Obstetrics, Eenry Ford EEoSpktal, Detrozt, N w h . Yrtuon, JOSEPH WILLJAY,M.D., Emeritus Professor of Anatomy and Physiology, University of Kentucky, 437 West Second St., Lexington, Ky. PUCKETT, WILLIAIIO., LV.A.,Ph.D., Instructor in Biology, Yrznceton Unirerstty, Prmceton, N. J . QL I R m G , D. P., M.A., Ph.D., Illstruetor in Biolog,, r e a t e r n Iteser?>e U n w e r a t y , rTrzi~land,Ohto. RADASCH, HENRYE., KS., KD., Professor of Histology and Embr>ology, Jefferson Medical College, Jlaniel Baugh Institute of Anatomy, Eleventh and Clinton Sls., Philadelphza, Pa. RANSAY,ANDREWJ., Ph.T)., Assistant Professor of Histolog) aiid Embryolog\, Jrffcraon X f d z t . c i 7 Collcgr, PkiladeZplaa, Pa. RAWON, STEPIIEN W., X U . , P1i.D. (Ex. C'om. '21-'24, Vicc-Pres. '26-'28, Pres. '38-), Professor and Director o f Neurological Tnstitutc, Northwestern Uiiiveisity Medical Seliool, 303 Bast C'A1culgo Ace., Chicago, IZZ. RASWUSSEN,ANDREWT., P1i.D. (Ex. Coiii. '34-'38), Professor of Neurology, Instatute of Anatomy, UniLerbity of Xznnesola, .M?wnrapoI!s. Ninn. RAVEN,HENRYC., Assoriatr Curator, Department of Comparative and Human Anatomy, A?ntrrcan M ~ L S P UoVf ~Natural Hzstory, 7 7 t h St. and Central Park West, NFUIP o r k C i t y . RAWLINSON,HERBERTE., M.H., M.D., XSe., Ph.D., Assistant Professor of Histology and Embryology, McGzZZ University, Nontreal, Canada. REAGAN,FRAKKIJN Y., Ph.D., Associate Professor of Anatomy, Medical School, University of Illinois, 1853 Wrsd P077~St., Chrcago, 171. m RRNYI, GEORGES., M.D., Associate Professor of Anatomy, Uiiiversity of Pennsylvania, School of 117edicine, $12 S. 39th St.,Philadelpliiu, Pa. R E V ~ L LDANIEL , GFLAISBEREY, A.B., KB., Professor of Anatomy, Cniverszty of Alberta, Ednionton, Alberta, Canada. REYNOLDS,SAMUEL R. M.,X B . , Ph D., hwistant Profeseor of Physiology, L o n g Island College of NMcdicznr, 3.50 Hcnry St., Brooklyn, N. l . ' RHINEHART,D. 8.,A X . , LIB., Professor of Applied rlnatonip, University of Arkansas, 4 Arnazstead Ed., L?i1lr Rock. Ark. RIPE. EDWARD I.OR.ANUS. A.E., 1'h.D.. be.L1., Professor of Zoblogy, Ohio Weskyan Pnvwrsiti/, Delauare, OhLo. R I E N I I O F F , W I L I ~ A MF., JR.,S.E.. 3I.D.. Sssociate Professor of Surgery, Johns Hopkins Hospital, 1201 X o r t h Calvert St., Baltimore, Ma. RINOOEN, ADOI P H R., A.M., Ph.D., Associate Professor of Zoology, Department of Zodlogy, Uniwrsat!y of N i n n r s o t n , Manneapolis, Ninn. RIOCTI.DAVID McK., A.B., M.D., Assistant Professor of Anatomy, Harvnrd M i d i c a l School, Boston, Mnss. EOBERTSON, W. R. B., A.B., A.M., Ph.D., Asmciate i n Anatomy, University of Iowa, Iowa City, l a . ROBINSON,BYRONL., M.A., hI.D., Professor o f Anatomy, C n i w r s i t y of Arkansa.9 Mcdacal School, Little Bock, A r k . ROGERS,JAXES B., A.M., M.T)., Associate Professor of Anatomy. Enaaersaty of Louiswdlr, School of Medicine. Lozirsvil7e, EentucX y. XObrBs, PIIILIPV., Ph.D., Assistant Pi ofesaor uf Biolog), H U ? I Z ~ ~ Cotlegc, O?L Cltnton, AT. Y . HWFSLS, WILIJAMMITCHELL, B.S., Ph.D., A ~ s i s t a n tI'iofcssor of Anutomg, College of Physiczms and SwgPons, Colvnibia Enzzersitg, 630 West 268th St., New Yorl; Czty. ROMER,ALFREDS., B.A., Ph.I)., Profcssor of Zoology and Curator of Vertebrate Paleontology, Bzological Laboratones, H a r z w d Enzversity, Cambridge, Mass. HOOFE, PAULGIBBONS, B.R., Pli.D., Instructor in hnatomp, Department of Anatomy, Universzty of Louzsv?l7e, Scliool of Xedicine, Louisville, Ky. R L HNSIWN, HYNANS., M.D., Pli.D., Consultant i n I' Iiiatr:, P . S. Public Hrallk s e w z c r , 23349 Eutazc PI., Baltimore, RiIDNI( K, n O R O T H E 4 , Ph.R., Ph.D., Assistant Illstruetor 111 Geiictics, Storrs xa. AgrzofdturaJ Expcrtment Stcrtzon, Stori s, Conn. R,T~GII,ROBERTS,B.A., M.A., Ph.D., Instructor in Zoologq, Hunter College, Ti P a r k Aw., A-ezo York Cit!/. RUTH, EDWARD S . , M.T>., F.A.C.B., 1680 X o r t h Pine St., Hollywood, Calif. EPTII.ELBERT I3 , -4.B.,A.M., €'h.T)., Assistant Professor of Anatomy, Georget o u n Ontrfrsrli/ Scliool of 24erlicinc, Washington. D. C. SABIN,FLoRENrlr R., H.S., M.D., Sc.D., LL.D. (Sccond ViLePres. 'OS-'O9, Pres. '34-'26), Member of Rockefellcr Inytitute, Rockef dler Inslztute for Nedr&aZ Research. 66th St. and Pork Awe., Xeu; Pork Ciiy. RALSKUKY, C. R., M.D., C.M., Assistant Piofessor of Aiiatoniy, Qzteerb's Uiaaterstty, Kisgston. Ontario, Canada. SANDSTROM, CARLJ., I'h.D., Assistaut Professor of Biology, iVew Pork Universzty, New York City. SCAMMON, RICHARDE., I'li.D., LL.D. (Ex.Corn. '33-'2fi, ' 3 5 , Vice-Pres. '28-'30\ , Distinguished Scrvicc Professor of the Graduate Faculty, Uncversity of Minnesota, Minneapolis, Mznn. 40 AM,IERICAN ASSOCIATIOX O F AXATOMISTS SCHAEFFER, JSCOB PARSONS, A.M., M.D., Ph.D., Sc.D. (Ex. Corn. '24-'29), Professor of Anatomy and Director of thc Daniel Baugh Institute of Anatomy, Jefferson 3iledical College, 4634 Spruce St., Philadelphia, Pa. S c H m D T , IDA GENTHER, B.A., M.A., Ph.D., Assistant Professor in Anatomy, University of C z n n n m l t , College of Medwine, Eden Awe., Czncannatz, Ohzo SCHOCHET, SYDNEY S., M.D., Surgeon, 5; East W a s h i n g t o n St., Chicago, IZl. SCHOEMAKER, DANIEL &I.,B.S., lI.D.,Professor Of Anatomy, School of Medicine. St. Louis University, ZbO2 S. Grand Ave., S t . Louis, No. SCHOUR, I S A S C , B.S., D.D.S., M.S., Pli.I)., Professor of Histolog?, University of Illiiiois College of Dentistry, 8U8 South Wood St., Clizcago, 111. SCHULTZ, ADOLPH H., Ph.D., Associate Professor of Physical Antliropology. Department of Anatomy, J o h n s HopEins Medical School, Baltzmore, V d . SiCHWARTZ, HF,NRYG., M.D., Instructor ill Neurological Surgery, Washington University Medical School, Bumes Euapctnl, S t . Louts, Mo. SCHWIND, JoshpH I,., A .B.,A.M., Ph.D., Assistant Professor of Anatomy, Albany Medical College, A l b a n y , N . F. SCOTT. Gomox H., Ph.U., Associate Professor of Cytology, W a s l i m g t o n Cnzversrty School of Medzczne, St. Loiiis, Mo. SCOTT,JOHN W., A X , A.M., Ph.D., Professor of Zoology and Director of P r e Mcdical Curriculurri, Enzoerstl!y of ?Vyonmg, Laramte, Wyomzng. SEDWICK, II. JOBE,D.D.S., Associate in Pediatrics, University of Rochcster, School of Medicine and Ilenttslry, Rochester, AT. Y. SEIB,GEORGEA,, A.K., M.D., Assistant Profcssor of Anatomy, Washington Uui. versity, 2323 L a f a y e t t e Ave., St. Louis, Mo. SELLING,LAUREKCE, A.E., M.D., Clinical Professor of Medirine and Head of Department of Medicine, University of Oregon Medical School, Xayer Building, Portland, Ore. SENIOX, H. I)., M.D., D.Sc., F.R.C.S. (Vice-Pres. '29-'23, Ex. Cam. '33-'S7), Profesyor Enicritus of Aiiatoniy, College of Medicine, New York University, Salasbwy Cow, Maine. SEVERINQHAUS, AURA E., K.S., A1 .A., Ph.D., Assistant Professor of Anatomy. College o f Physicians and Surgeons, Coliimbza Enzversity, X e w P o r k City. SRANER, R ~ L P HFAUST,P1i.D.. Professor of Anatomy, Universzty of Alberta, E d m o n t o n , Alberla, rannda. SHARP,CLAYTON, M.D., Assistant Professor of L4nato~ny,Long Island rollega of Xedanne, 350 Henry St., Brooklyn, N . P. SHEARER, EDWINM., Ph.D., Assistant Professor of Anatomy, New York University and Bcllevue IIospital Medical College, 417 First Aze., Xcw Fork City. SHP.EHAN, I)Or;.4L, lf.n., D.Sr., Professor of Anntoniy, lrczc P o r k Unzrersztii. College of V e d i c m , 477 F m t A I c . , JTezci Y o r k C i t y . SHEININ,JOHN J., E.S.,M.S., Ph.D., M.H., Dean and Chairman Department of Anatomy, Chicago Xedical School, 710 Soutlz JToloott dw.,Chwaqo, Ill. SHIELDS,RANDOLZII TTTPICER, A.R., M.D., Associate Dean and Professor of IIistology and Embryology, School of Medicine, Shantung Chrzstian C n t verstty, Tsznan, Shanlung, C'hzna. SIIUNWAY, WALDO.A.B., A.M., Pii.l>., Professor of Zo6logy, University of Illznozs, Urbana, Ill. S m m , PARIZE H., Ph.D., Assistant Professor of Anatomy, U n i w r s z t y of TlZinot&, 1S53 W . Polk St., Chzcogo, Ill. SIMXINS, CLEVELANDS., A.B., Ph.D., Associate Professor of Bnatomy and Embryology, University of Tennessee Medical School, 8?5 Monroe Ave., Memphis, T e s n . RIUPSON, MIRIAMELIZABETH, A.B., M.-4., Pb.D., M.D., Associate Professor of Anatomv, University of Califorma, Berkeley, C a h f . S I N ~ F EEEWAXD, C, M.D., Associate Director, St. Clare'> Hospital, 133 East 58th St., AVen, Y o r k Pity. Snfmsm, GEOROEK., Ph.D., Insti uetor iii Anatomy, Colu?rtbca 0 nziciszly, C o l k g e of YBysiczans and Surgeons, 630 W e s t 16821i St., y e w Pork City. SMI~MI, BERTRAXGAWER,A.H., Ph.D., Professor of Anatomy, College of Medicine, New P o r k University, 477 First Ace., N e m Fork City. SNI'I-H,CARL G., M.D., Ph.D., Lecturer in i?natomp, 77niz;erszly of Toronto, Toronto 5, Canada. SMITH, CHFXSTIANNA, A.hl., Ph.D., Professor of Zoology, Mount Holyoke College, South Hadley, Mass. SMITH,DAVIDT., A.B., M.D., Associate Professor of Medicine and Professor of Bacteriology, Duke University, Duke Hospital, Dztrkum, N . C. SMITH,GEORGE MILTON,A.R., M.D., Research Sssociate in Anatomy, P a l e Oniversity Srhool of Medicine, Ptne Orchard, Corm SNITH,PHILIP EI)WARU,M.S.,PIi.D., (Ex. Corn. '34-':38), Professor of Anatomy, College of Pbysicians and Surgeons, Columbia Universit>, 632 West 1G8th St., N e w Y o r k Czty. SMITII,WILXUECLEVELAND, K D . , Head of the Department of Gross Anatomy, Tulane Unzaersity, New Orleans, La. SMITII,WILBURK., A.B., M.D., Associate Professor of Anatomy, liriiverszty of Roehester School of Mcdzcine and I)entistry, Rochesicr, N . IT. SNIDER, RAY S., Ph.D., Instructor in Anatom?, U n i w of Kcbraska, College of Mrdiczne, On~alzu,Web. L. E., M.D., Instructor in Surgery, Uszoersctg of Pennsylvania School of Medicine, Pl~aluclelphin,Pa. SNOOK, THEODORE, Ph.D., Assistant Professor of' Histology, S y ~ ~ c uTln~oerszty, r~ HNODGRASS, SNYDER,FRANKLIN PAUST, M.D., Associate Professor, 1)epartment of Obytetrics, Johiks Doykzns Hospital, Baltztnore, Xd. SOI~NITZKY, OTIIMAR, Ph.D., M.D., Professor of Anatomy, G ~ o r gtown ( Un Sclioo2 of Xcdieine, Waskzngto?i, D. C . FPAULDIXG,&I. H., A.K., A.M., Professor of Zoology, University of Montana, 12? S o r t h Rozeman Ace., Bozencan, ,Montana. SPECTOR, BENJAMTK, KD., Professor of Anatomy, T u f t s College Hedical School, 416 Huntington Ace., Boston, Mass. RPEIDFJ,,CARL C., Ph.B., Ph.D., Professor of Anatomy, ITnirersitg of Virginia Medical School, Uniaersily, V a . STARK,MARY B., Ph.B., N.A., Ph.D., Professor of Hktology and Emhryology, S e w York Rledical College and Flower Hospital, 4.50 East S ~ ~ t y - f o c o tSt., h X r w Y o r k City. S r i m ~KATHRYN ~, F., &LA., Ph.D., A ssistaiit Professor of Zoology, 11Zount Holyoke College, South Hadlcy, Mass. STEVI.:NSOPIT, PAULHITSTON, B.R., M..4., N.D., Sssociate Professor of hnatomy, Psiping Onion V e d i c a l Co1lc.q~.P r i p i n g , China. STILE, IIEXRY WILSOX,N .D., Professor of Anatomy, Collcgc of Medirine, SgracuRe T,-niversity, 309 s. McBrtde St., ,qyraczkse, hl. P. STOCKARD, CHARIES RUPERT, B.S., h.1.8., M.U., Pli.D., Se.D. (See. Trcas. '1&'z17 Ex. Corn. '23-28, l'res. '28-'30), Professor of Anatomy, Cornell University Xedical College. 1300 York A w . , N e w Y o r k City. STONE,LEOXSTA~SFIELD. €l'i.B., Ph.D., Associate Prnfeqsor of Anatom?, Yak School of Medicine, Sterling Hall of Medicme, Anatonty Department. Ceda? St., New Haven, Conn. STONE,ROBERTS.. B.A., MA., M.B., W.D., Associate Professor of Roentgenology. University of Califoinis Medical School, Uni\ ersity Hospital, Parnassus a7d Third Ates., San Francisco, Calif. STOPFORD, JOHN SEBASTIAN B., M.D., F.R.S., Vice-Chancellor, U ~ L Isitij W of Manchestcr, Vanchcster, England. S m u s , \vILLIAhf L., JR..Pli.D., Adsociitte 11: Anatomy, Johns Hopdins d f ~ d z c d School, Bultzmore, Md. STREETER, GEORGE L.. A.M., M.D., Sc.D., LL.D. (Ex.Corn. '18-'00, Pres. '26-'28), Chairman Division of Animal Biology ; Director, Department of Embryology, Curnegie Institutton of Washi?igton, Wolfe and Madison Sfs., Balttmore, NLd S ~ O M S T E FRAKK N, ALBEET, B.S., &IS., D.Sc., Associate Professor of Zoology, State University of Iowa, 318 Xoiilogy ButZd.ng, I o c a Ctty, Iowa. STROXG, LEONXI., A.B., B.S., Ph.D., Assirtant Professor of Anatomy, Medical School. Universitr of RIichigaii, 4502 E. 3IedicaZ Bul7ding, Crwrerszty of Michigan, Ann Aihor, Wrrh. STRONG, OLIXER S., A.B., A X . , Ph.D., Yrofwsor Erneritus of h-eurology anit Ncurohistology, Columbia University, CoZIeqe of Physzc~ctnsand Surgeons. 650 West 168th Sf., XPW Fork Ctty. STRDSG, REUBENMYRON. A.R., A.M., P1i.D. (Ex. Corn. 'l6-'N), Profcssor of Anatomy, Lojyoln Uniz'ersity School of 3 f ~ d i r i ? i 706 ~ , South Wolcotf A t e . , Chicago, I7l. STULTZ,WALTERA., B.A., P1i.D.. Assistant Professor of Anatomy, Cniz erslty OJ Vermont Medical School, Burlington, Pt. STUKKARD), H. TV., Ph.D., Profcssor of Biology, A-ew Pork Univeruily, A - r a Yorh my. S ~ , L I V A WALTER N, EDIZ-ARD, Ak.bI., Ph.D., Professor of Anatomy, University of Wisconsin, Science Hall, Madison, Wis. SUMXERS,FRANCIS N., Ph.D.,Instiuctor 111 Anntomy, Corwl7 MPdiraZ Colbyc. 1300 P m k d i e . , SPW Poilc City. SWANK, ROY L., B.S., N.R., M.D., Ph.D., Xesearrh Fellomship, Department of Pathology. Barcard MPdieal School, Boston, 3fcls.s. SWENSON,E. A., A.B., A.M., Ph.D., Associate i n Anatotnj, Xcdical Department, University of Pennsylvania, PhiZadeTphia, Pa. SW-ETT,FRANCIS HUNTINGTON, A.R., A.M., Ph.T)., Professor of Anatomy, Duke Univerfiity School of Medicine, Bo.7 3710. Durham, N . C. SWIFT,CHARLESH., M.D.. €'h.D., Associate Professor of Anatomy. The Cnzversctg of Chicago, Chzmqo, Ill. SWINGLE, W. W., A.B., A .&I., Ph.D., Professor of Biology, Princeton Cntversify, Princeton, hl. J . SYKES,GEORGE F,, Ph.R., N.A., Assistant Professor of dnatoiny, Tufts College Medical School, 476 Htcntington A t e . , Bobton, &fms. A,, 31 D., Bellcrzte Llospital, X e & rot?; City. TERKI,Tur LIO, M.D., Professor of Anatomy, T h e riizeerszty of Padua, Padzia, Ttalg TEERY, ROBERTJAMFS,A.B., 1I.D. (Ex. Coin. '08-'12, '21-'24), Professor of Anatomy, Washangton Cniversity School of Xedzcine, St. Louts, X o . THARALDSEN, CONUD E., B.S., Ar.A., Ph.D., Professor of .4natoniy, Neu: Fork Mcdzral Collcge, 4-50 East 64th St., New Fork City. THOMPSON,IAN hlacLnsaN, B.Sc., M.B., Ch.B., Professor of Anatomy and Director of the Department, Medtcal College, Cntverszt?y of Maaitoba, IVmntpeg, Canada. THORKELSON, J-4cOB, M.D., Butte Clinic, Inc., Butte, Xont. THRO,WILLIAMC., B.S., A.M., K D . , Associate Profeswr of Medicine (Clinical Pathology) Cornell Cnivtrmly Xedical Co7leqe, 2300 PorL dee., S e w York City. THURINGER, JOSEPH &I., Xll., Professor of Histology and Embryology and Head of Department, University of Oklahoma, 8chool of Medicine, East 13th and Phillips Sts., Oklahoma Czty, Okla. TIL-NEY, FREDERICK, A . S . , hI.T)., Ph.D., D.Sc., Professor of Kenrology and Neuro anatomy, Consultant in Beurology, Presbyterian, Babieq, Roosevelt, Brooklyn, Methodist, Episcopal, and Greenrvich Hospitals; Seurologcoal I n s t z t d e . .MecizcaE Center, Yew Pork City. TODD, T. W r N G A m , M.B., C1i.B. (Mane.), P.R.C.S. (Eng.), (VicePres. '20-21, F k Corn. '24- '29, First Vice-Pres. '3%) Director Derelopmental Health Inquiry, Professor of Anatomy, Director of the Hamann Museiim of Comparative Anthropology, and Anatomy, School of &Idwine, Chairman Brush E'oundation, Western Reserrc Ulzzzersil y, 2109 Adclbert Road, Clezclanrl, Olrzo. Tonr PRIKS, EDNAH., M.D., Associate Professor of Anatomy, r'anderbalt Cn Lversity NedLcal School, Kashville, Tenn. TOWER.SMLAH SHFLDON,B.S., Ph.D., M.D., Associate in Anatomy, Johns Hopkzns Bfedical School, Baltimore, X d . TUCY, HENRY C., A.E., A.M., Ph.D., Profcssor of Anatomy, Utzioersity of Kansas, Lawrence, Kansas. TRVITER,MILDRED,A.B., M.S., Ph.D., A ssociatc Professor of Anatomy, Washzngton F n i w r s i t y ScFmol of Xedicine, St. Lo?cis, Ma. TORXEIR, CHARLESIT.,B.S., A.M., Ph.T)., Professor of Dairv Hnshanrlrp, Cnicevsity of Missouri, Columbia, Mo. TURSER,C L A R E N CI) ~., Pli.])., Instructor in Zoologr, S O r t h W P ? t e r n Cnttersif Xedtcul School, 303 Bast Chicago dve., Chtcago, IZ1. TURNER,CLaEPirE L., M.A., Ph.D., Professor of Zoology, Northwestern Cnr versity, Evanston, 111. UIILENIIUTH, EDUARD,Ph.D., Professor of Anatomy, L7nrwrssty of M a ~ y Z a ~ r l Xedical School. Baltiniorp, X d . VAN CANPE~-HOCT, ERNEST, M.D., Ph.D., Professor of Aimtonix- and Embryology, Un bversstd de L o u uuw, Louvain, Belgium. VAN CIAL~VE,C. D., Ph.D., Instructor in Anatomy, I'naacrsil?/ of Pennsylvania Nediral School, Plizladdphia, Pa. v m DER HORST,C . J., DSc., Professor, €read of the Department of Zoiilogy, University of the Witwatersrand, P. 0. BOY 1 1 7 6 , Johunnesburg, South d f rica. TEITELB47 IT,HARRY- 44 AMERICAN BSSOCIATION O F AKATOMISTS WAGENEN,GFXTRUDE, A.B., Ph.D., Research Assistant in Obstetrics and Gynecology, Assistant Professor’s rank, P a l e IJniversity, N e w l l a v e n Hospital, New Haven, Conn. VICARI,~ M I L I A ,M.A., Associate in Anatomy, Cornell University Medtcal College, 1300 Pork Ave., Neu! Pork Czty. VONDERAHE, A. R., A.E., B.Sc., M.D., Sssistant Professor of Anatomy, University of Czncznnntz, College of Medicine, E d e n Ave., Cincmnali, Ohio. WAITE, FREDERICK CLAYTON,A.M., Ph.D., Professor of Histology and Embryology, Western Reserve University School of Medicine, 2109 Adelbert Road, Cleveland, O b o . WALLER,WILLIAMH., Ph.D., Yrofesqoor of 4 n a t o m y , Onzzvrsily of South Dakota, Medzoal Srkool, Vcrmzllzmi, S. Dak. WALLIN, IVAN E., M.A., I).&., Professor of A4natomy and Head of Department, Secretary of Faculty, Cniversii y of Colorado, School of Medicine, Denver, Colo. WALMSLEY,THOMAS,M.D., F.R.S.E., Professor of Anatomy, Queen’s University of Belfast, Belfast, Ireland. WARBRITTON, VIRGENE, M.A ., P h B . (MRS. FRED I<AVANAUGH), IllStrUCtOr ill Animal Husbandry, Cniverstty of Missouri, College of A g VAN NO. WARD,JAMESW., Ph.D., Instructor 111 Anatomy, Pandwbtlt Gntiwstty Medzcal Sohool, Nushuzlle, Tenn. WARREN, A. EYERSON, Ph.D., Assistant Professor of Biology, McMaster U n i w r sily, Hamzlton, Ontarzo, Canada. WASSERMANN,FRIEDRrrrI, &f.u.,ZoEler Foundatzon, T h e Uniberstty of Chtcago, Chicago, Ill. U‘ATKINS. RICIIARDWATKIN,S.B., M.D., Assistant Professor of Otolaryngology, Rush Medical College, 5608 Ecnwood A M . , Chicago, Ill. WAFT, JAMES CRAWFORD,hl.A., M.D., Profemor of hnatorny, University of Toronto, 20 Hawthorne Awe., Toronto, Canada. WEATHERFORD, HAROLDLORRAINE,A.B., ,4.hI., Ph.D., Assistant Professor of Anatomy, Hurvard Medicul School, Boston, Mass. WEBB, R I C H A RL., ~ A.B., M.S., Ph.D., Assistant Professor of Anatomy, College of Nedzczne, Onivcrsaty o f Illmozs, 1853 W . Polk St., Chzcago, 111. WEED, LEWIS HILL, A.R., A.M., M.D., Sc.D. (Ex. Com. ’2O-’2l; ’35-, See.-Treas. ’23- ’30), Professor of lZnatorny and Director, Jolans Hopkins Medical School, Baltimore, Md. WEISS, PAUL,Ph.D., Associate Profcssor of Zoology, T h e Un Chzcugo, 111. WEISSENBERG, RIVHARD, 1x3..Fellom, 2’hc Tl’ialar l n s f itute, S G f h S t . and Woodland AIY., Phzladflphia, Pa. WELLS, LEMENJ ., Ph.D., Asqistant Professor of Anatoni;v, Unii ersity of Missou~z, Columbza, M a . WESTON,JEAN K., N.S., Ph.U., Instructor in Anatomy, 7;ntz.ersity of Mzchigan, Ann Arbor, Zzch. WHEELER,THFBDORA, A.H., M.T)., Clinical Associate in Xenrology, Willovghby Tower, 8 South Maclcigan Aze., Chzcago, 111. WHITESIDE-IIARVEL,BEATRICE, B.A., Ph.D., Voluntary Research Worker, o/o Guaranty Trust Go., 140 Broadway, b-eiil Pork Czty. WIEMAN,€1. L., Ph.D., Professor of ZoBlogy, Onawersaty of Cincznnati, Cincinnatr, Ohio. WILLARD,WILLIAM A., A.M., Ph.D., Profrssor of Anatomy, Univervity of Nebraska, College of Medicine, Forly-sccond P1. and Dezccy Awe., Omahu, Ncb. \vILLIA&fS, GEORGED., A.B., A.M., M.D., Ph.D., ARsistant Professor of Anatomy, Wnshhiylon f:niucrsilil School of Af !vILLrAMS, ROY ~ ~ R I F F I V A.R., , A.lf., of Pfnas.ylvnn ia Soh 001 of Mwlicine, Phdnde1ph ia. Pa, ~ ’ I T . L . I A Z I s, S ’ r w t l m CIJI,VW,l’h.l)., Assistant i n Aiintomy. Jfetlicul Depart?rient, 7Ji)iiwersLty of Priinn~ylonn~a, PlrilarltIp7ria, Pa. ~&rlLLIYK., EF.NJ.4hllN H 4RRISON. I’h.T)., 1’1.0feSfrOr O f % O O l O g v , zini’VeTSity Uf EoehPstrr, Roc7zenf~r, A’. Y . WILSOX, JAIIES ‘I’Iroaras, M.A., M.U., IAL.T)., F.H.S., Professor of Anatomy, Lniversaty of Cantbridge, dnudom?y School, Xru, Museunks, Cambridye, Enylund. WINDLE, W I r u A a r F., B.S., M.S., Ph.l)., Professor of Kicroscopic Anatomy, Northwestern TTiiiverSity Medic11 Sc.hool, 30S 3;:cixt (‘hiea.qo A w., C!liicugo, 1Ll. U’ii,imrm, G F ~ K GB., K A.R., M.1). (Rx.C‘nm. ’IT-), I’arknian Professor of Anatomy, Htrrvtr rrl Blc [lira1 S c h oo 1 , N o s t ow, df nss. WiwmKwuoN, ‘ I ’ H U M . ~C~A S ~ Y M.l)., , F.A.C.H., 1637‘6 Via dc lus Olas, Pacific Pulundrs, (’albf. WITWHI, E WL, PILL>.,Profrrvor of Xotjlogy, Stcite ~ / 7 i t v r ~ s iof/ y lozoa, Iowa City, Iowa. WITTENBORO, A. II., M.D., Professor of Anatomy, College of Xedicine, University of Tmacsurc, Y s n i p h i r , T t n n . W’OLBE, J. X, Pii.D., Assistant Professor of Anatomy. AIDan!y Medicd College, A l b a n y , N . P. WOODDURNE, RI-SSELL T., MA., Ph.D., Instructor in Auatoniy, University of Mlicki,gan, Ann Arbor, Mirh. WOODMAN, .2LIrE R., AI.l>., Associate Professor of Histology and Embryology, Rosloii Cnirw.&l2/ Srhool of llrdrrine, RO Rust Concord St., R o d o n , Muss. WOOT,LARD, HWEICT II., M.l)., l).Sr., t’rofvsor of Anatomy, Zliriccrsily College, London, R:a,glaarL W O E C E S ~ RJOHN , LWKF, M.I)., T’rnfl,ssor of .Anfltoniy, Vnireisity of Washingtun, 6211 Twenty-firs1 A vf ., S. R.. S r n t l l e , 7Vaslr. T N T P F (I. M I~,.,, Ph.1>., .\e&tarit Professor of Anstoniy, POInr77 Collrge, S c u ? J’ork C i t y . YOUNG.&I. WHARTON,N.D., Ph.D., Assihtmt P ~ o f e s s o r of Anatomy, Howard L‘aiversii?y, 7Tnshington. D . C . YOUNG,WILLIAXC., T’li.T)., Assistant l’mfewor of Biology, E m m Z7nicl~rsity, Proridenrs, R. 1. ZECHYI,, GT-ATAV,Al.T)., F A .C’.R., Assistant Profeswr in Anatomy, and Associate in Surgery, Uiii-iersit~ o f Illinois C‘oll(~gcof Metlivinr, 74.53 TT. Polk St., Cltinyn, IU. ZIMMERX44.\rN, ARNOLD.LirSc., D.Se. ( ( k n e w , Switzerl:~nd), Asbociate Professor of Anatomy, Ilnivrr8ity of Tllinois College of Medicine, 1853 H’. Polk St., Chicago, 111. ZWEXEE, RAI-MUXDL., B.B., Ph.D., Amistant Professor of Anatomy, College of Physicians and Burgrons, Colnnibio ITniversity, 630 T e s t l 6 ‘ S t k St., N e w Pork city.