LIST O F TITLES GENERAL AND COMPARATIVE PIlYSIOLOGY Read 1 . The influence of the annular tympanic cartilage on the development of the tympanic membrane of the frog (Rana pipiens). 0. M. Helff, State University of Iowa. (Lantern; 10 min.) 2. Evidence of direct hormonic influence on the growth and differentiation of the frog’s tongue during metamorphosis. 0. M. Helff, State University of Iowa. (Lantern; 5 min.) 3. Blood-concentration studies in marine fishes. F. G. Hall, Duke University. (Lantern; 12 min.) 4. Spiral movement in man. A. A. Schaeffer, University of Kansas. (Lantern; 15 min.) 5. The effect of temperature on the rate of movement in the marine ameba, Mayorella conipes. Fred W. Allen, Jr., University of Kansas. (Introduced by H. H. Lane.) ‘(Lantern; 15 min.) 6. Some physiological responses to alterations in the water balance of the cat. G. T. Caldwdl, University of Arizona. (Introduced by the Secretary of Section F.) (Lantern; 1 5 min.) 7. The motility of spermatozoa as a n indicator for the internal secretion of the testis. Carl R. Moore, University of Chicago. (Lantern; 8 min.) 8. The effect of abdominal temperature on spermatozoa of the guinea-pig. Carl R. Moore, University of Chicago. (Lantern; 2 rnin.) 9. The application of the spermatozoon motility reaction as a n indicator for the testis hormone. Carl R. Moore, University of Chicago. (Lantern; 5 min.) 10. Concerning the intestinal coerum in Asterias forbesii. Robert A. Budington, Oberlin College. (Lantern; 5 min.) 11. Relations of calcium and phosphorus in the plasma of parathyroidectomized dogs to the appearance of tetany. C. I. Reed, Baylor University Medical School. (Introduced by the Secretary of the Society.) (Blackboard; 10 min.) 12. Sulphate retention in dogs following bilateral adrenal extirpation. W. W. Swingle and W. F. Wenner, State University of Iowa. (Lantern; 8 min.) 13. The effect of CO, administration upon parathyroid tetany. W. W. Swingle, W. W. Wenner, and P. Stanley, State Vniversity of Iowa. (Lantern; 7 min.) 14. Reserve oxygen supply, metabolic rate and gonadal state a s indicated by recovery from drowning in the Japanese beetle. M. W. Eddy, University of Pennsylvania and Dickinson College. (Introduced by J. H. Bodine.) (Lantern; 15 min.) 15. The cause of bradycardia accompanying postural apnea in the duck. Marion S. Dooley (introduced by Theodore Koppanyi) and Theodore Koppanyi, College of Medicine of Syracuse University. ( 1 0 min.) 107 108 AMERICAN SOCIETY OF Z O ~ L O G I S T S 16. Ultraviolet radiation and division in Paramecium raudatum. Marie A. Hinrichs, University of Chicago. (Lantern ; 15 min.) 17. Protoplasmic reorganization in Uronycliia uncinata sp. nov. C. V. Taylor, Stanford University. (8 rnin.) 18. Experimental evidence f o r monaxial organization in a naked ameba. Paul L. Radir, Stanford University. (Introduced by C. V. Taylor.) ( 7 min.) 19. The influence of precooling, castration, and body weight on the production of hihernation i n Citellus trideeemlineatus (Tvlitchell) George E. Johnson, Kansas S t a t e Agricultural College. (Lantern ; 12 rnin.) 20. The effects of chemicals on the reaction to light by tadpoles. Renry T. Folger, University of Michigan. (Lantern; 15 min.) 21. Experimental relaxation of the symphysis pubis o f the guinea-pig. Frederick L. IIisaw, University of Wisconsin. (15 min.) 22. The origin of electric polarity in the onion root. Gordon Marsh, University of Texas. (Introduced by E. J. Lund.) (15 min.) 23. Relative sensitivity to light in different parts of the compound eye in the drone-fly, Eristalis tenax. William L. Dolley, Jr., University of Buffalo, and J. L. Wierda, Cornell University Medical College. (Charts; 15 rnin.) 24. The effect of calcium and the substratum on the r a t e of locomotion in Amoeba proteus. D. L. Hopkins, Johns IIopkins and Duke Universities. (Introduced by S. 0. Mast.) (15 min.) 25. Further studies upon the effects o f x-rays on regeneration. Winterton C. Curtis and Raymond A. Ritter, University of Missouri. (Reported by Mr. Ritter, introduced by Mr. Curtis.) (Lantern; 10 min.) (Also by demonstr:i tion.) 26. The occurrence of a cellulase in the shipworm. Lyman C. Boynton and Robert C. Miller, University of Washington. (Lantern; 10 rnin.) 27. Serial counts of blood f a t and blood cells. Christianna Smith, Mount Holyoke College. (Introduced by the Secretary of the Society.) Lantern and opaque projection; 8 min.) 28. Studies on normal rhythm of the white blood cells in women. Anna Mary McDowell and Christianna Smith, Mount Holyoke College. (Introduced by the Secretary of the Society.) (Lantern and opaque projection; 7 rnin.) 29. Duration of the larval life of ascidisns. Caswell Grave, Washington University. (Lantern; 15 min.) 30. Effect o f ultraviolet rays in altering the polarity of Nereis eggs. E. E. Just, Howard University. (10 min.) 31. Cortical effect of ultraviolet radiation on Nereis eggs. E. E. Just, Howard University. (5 min.) 32. The effect of insulin on the blood sugars of fishes. Irving E. Gray, Tulane Universit). (Introdured by the Secretary of Section F.) (5 min.) . By demonstration 33. The influence o f high temperature on the histology and reproductive capacity of the guinea-pig testis. William C. Young, University of Chicago. (Introduced by Carl R. Moore.) 34. Bipedal habit in the albino r a t and the accompanying changes in the structure of the hind limb. Harold 8. Colton, University of Pennsylvania. LIST O F TITLES 109 35. Growth curves of white rats-tlie control line compared with line exposed periodically to nicotine fumes. Robert A. Budington, Oberlin College. 36. Induced encystment and excystment in Euplotes sp. nov. Laura Garnjobst, Stanford University. (Introduced by C. V. Taylor.) 37. Acclimatization of tadpoles to methyl, ethyl, a n d propyl alcohols. H a r r y T. Folger, University of Michigan. 38. 1Iistological changes correlated with gas secretion in Hydra oligactis Pallas. B y Wm. A. Kepner and W. L. Thomas, Jr., University of Virginia. 39. Some unusual cases of liead regeneration in Planaria maculata. J. W. Wilson, Brown University. 40. Effects of irradiation upon regeneration. Winterton C. Curtis, Raymond A. Ritter, and Kenneth Coldwater, TJniversity of Missouri. 41. Germ-cell determiners in the mollusc Spliaeriuni striatinum. Farris R. Woods, University of Missouri. ( I n t r o d u c d by W. C. Curtis.) By title 42. Concerning the phagocyte as a source of alexin. Roscoe R. Hyde, Johns Hopkins University. 43. The respiratory regulation of the crayfish (Cambarus immunis). 0. M. Helff, State University of Iowa. 44. hlicrochemical studies on the nervous system. I. The sulphur and phosphorus content of the cerebral hemispheres of the guinea-pig. Raoul M. May, Institut Pasteur, Paris, and Washington Square College of New York University. 1.5. Duration of light and the wings of aphids. A . Franklin Shull, University of Michigan. 46. The accession of contractile vacuoles during fission in Paramecium caudatum. Charles F. D e Garis, Johns Hopkins University. (Introduced by H. 8. Jennings. ) 47. The effects of anterior and posterior selections on fission rate in pure lines of Paramecium caudatum. Charles F. D e Garis, Johns Hopkins liniversity. (Introduced by H. 8. Jennings.) 48. A new apparatus for quantitative determinations of the respiratory exchange of very small mammals. G. T. Caldwell, University of Arizona. (Introduced by the Secretary of Section F . ) 49. The effect of pregnancy and lactation upon the life-span of adrenalectomized cats. E. L. Corey, Yale University. (Introduced by W. W. Swingle.) 50. Acid intoxication of adrenal insufficiency in dogs. F. F. Yonkinan, S t a t e University of Iowa. (Introduced by W. W. Swingle.) 31. The action of Na, K, a n d Ca chlorides upon the egg of FunduIus. Joseph Hall Bodine, University of Pennsylvania. ,i3. The effects of certain anaesthetics on the cleavagc reaction in sea-urchin (Introduced eggs. Reuben Blumenthal, University of Pennsylvania. by J. H. Bodinc.) .53. The effects of chemicals on the viscosity of protoplasm of amoeba a s indicated by the brownian movement. Floyd John Brinley, University of Pennsylvania. (Introduced hy J. H. Bodine.) 110 AMERICAN SOCIETY OF ZOOLOGISTS 54. The rate of water exchange through the egg membrane of Fundulus. Elizabeth Yagle, University of Pennsylvania. (Introduced b y J. H. Bodine.) 53. Proteolytic enzymes probably associated with cold-hardiness. Nellie M. Payne, University of Pennsylvania. (Introducted by J. H. Bodine.) 56. The effect of the hydrogen-ion concentration ( p H ) on the toxicity of hydrocyanio acid (HCN) Fundulns embryos. Joseph Hall Bodine, University of Pennsylvania. 57. The normal blood picture of white rats. Fazil6 Shevket, Mount Holyoke College. Introduced by A. Elizabeth Adams.) 58. Changes in the blood picture of white rats following thyroid feeding. Frazil6 Shevket and A. Elizabeth Adams, Mount Holyoke College. 39. Color changes in fishes induced by light rays of varying wave length. Ellinor H. Behre, Louisiana S t a t e University. 60. Effects of water starvation on adults and young of two strains of mice with respect t o their heterozygosity. Corinne Keaty, Louisiana State University. (Introduced by Ellinor H. Behre.) 61. Observations on female fowl rendered completely sexless. L. V. Domm, University of Chicago. (Introduced by F. R. Lillie.) 62. Autoplastic testis g r a f t s in the leghorn fowl. L. V. Domm, University of Chicago. (Introduced b y F. R. Lillie.) 63. The effect of the quantity of culture medium on the division rate of Oxytrieha. H. B. Yocom, University of Oregon. 64. Histological differences in the thyroid glands from two subspecies of Peromyscus maniculatus. R. R. Huestis and H. B. Yocom, University of Oregon. 65. On the relation of spawning of the American oyster t o temperature. T. C. Nelson, Rutgers University. 66. Color changes in crustaceans, especially i n Palaemonetes. E. B. Perkins, Rutgers University. (Introduced by T. C. Nelson.) 67. Some effects of pure salts on Amoeba proteus. S. 0. Mast, Johns Hopkins University. 68. Changes in the total volume and in the volumetric ratio between plasmagel and plasmasol in Amoeba proteus. H. W. Chalkley, Johns Hopkins University. (Introduced by S. 0. Mast.) 69. Relations between metabolism longevity and sex in Daphnia magna a s expressed at different temperatures. J. W. MacArthur and W. H. T. Baillie, University of Toronto. 70. Variety of behavior of larval trrmatocles (Cercariae). Harry M. Miller, Jr., Washington University. 71. Decolorization wave of pigment granules in the jelly hull of the inseminated egg of Echinarachnius parma exposed to dilute sea-water during the process of menibrane separation. E. E. Just, Howard University. LIST O F TITLES 111 GENERAL EVOISJTION Read 72. The Lommen theory of the origin of postcoelenterate phyla. E. P. Churchill, Jr., University of South Dakota. (8 rnin.) 73. The phylogenetic origin of the sterile castes of termites. Alfred Edwards Emerson, University of Pittsburgh. (15 min.) 74. The probable magnitude of variations subject to natural selection. W. H. Longley, Goucher College. (15 min.) By t i t l e 73. The distribution, variation, and evolution of certain prosobranchiate Mollusca from the littoral zone of the coasts of Keiv England and Norway. H. P. K. Agersborg, Milliken University. PROTOZOOLOGY Itend 76. Some effects of dietary insufficiency in the ciliate Didiniuni nasutum. C. Dale Beers, Johns Hopkins University. (Blackboard ; 13 niin.) 77. Binary fission in Craspidonotus vermicularis. William F. Diller, University of Pennsylvania. (Introduced by I). H. Wenrich.) (Lantern; 15 min.) (Also by demonstration.) By d enionst ra t i o n 78. Division and life-cyele of Entosiphon sulcatum. James B. Lackey, Washington Square College, New York University. (Introduced by T. C. Nelson.) By title 79. The question of nuclear origin of blepharoplasts and ceiitrosome in Euglena. R. P. Hall, New York University. SO. Viability of Trichomonas hominis at various temperatures and in various dilutions of water. Robert ISegner, Johns Hopkins School of Hygiene and Public Health. COMPARATIVE ANATOMY Read 81. The modifications of the legs of the male Cleidogona (Spirostrephon) caesioannulatus Wood ( a millepede) f o r sexual purposes. Stephen R. Williams, Miami University. (Chart ; 10 min.) 82. Camera-lucida diagrams illustrating the development of the external female genitalia of a millepede, Paraiulus venustus Wood. R. A. Hefner, Miami University. (Introduced by the Secretary of Section F.) (15 min.) 83. New light on the struetnral pattern of the nervous system of Annelida. W. M. Smallwood, Syracuse University. (Lantern ; lt5 min.) 112 AMERICAN SOCIETY OF ZOOLOGISTS 84. A preliminary note on tlie brain of myxinoid fishes. Dr. J. Jansen, University of Chicago. (Introduced by C. Judson Herrick.) (13 min.) 8.5. Terminations of optic fibers within the striate area of the forebrain of mammals. Dr. S. Poljak, University of Chicago. (Introduced by G. W. Rnrtelmez.) (1.5 min.) By demonstration 86. Methylene-blue-stainedslides of Annelida ganglia made by Dr. Hans Krawany, of Austria. W. M. Smnllwood, Syracuse Unirersity. By tatle 87. The anatomy and life-history of a fresh-water mollusk of the genus Sphnerium. By Cecil R. Monk, Willamette University. (Introduced by H. J. Van Cleave.) CYTOLOGY Eend 88. Morphological changes in the subcuticular nuclei of the Amntliocephala. I€. J. Van Cleave, University of Illinois. (Charts; 10 min.) 89. A comparison of the chromosomes of the r a t and mouse, with especial rrference to tho question of the homology of mammalian chromosomes. Theophilus S. Painter, University of Texas. (Lantern; 1 2 min.) 90. A n unnsual chromosome complex in Lethocerus. A. M. Chickering, Albion College. (Introduced by the Secretary of Section F.) (Lantern; 1 0 min.) 91. F i f t y )-ears of cytological staining. S. 1. Kornhauser, University of Louisyille, Medical Department. (1.5 min.) Bg demonstration 9%. Storage of food in the eggs of mammals. Mary J. Guthrie and Katharine R. Jeffers, University of Missouri. (Introduced by Mary J. Guthrie.) 93. Storage of food in tlie eggs and yolk cells of Planaria velata. Mary J. Guthrie and Charles W. Steele. University of Missouri. (Introduced by Mary J. Guthrie.) 94. The use of thionin, eosin, and azure-eosin on histological sections for routine work. 8. I. Kornhauser, University of Louisville, Medical Department. 93. A clear-view demonstration specimen dish for valuable embryos. S. I. Kornhauser, University of Louisville, Medical Department. 96. Bodies in the egg of Arbacia described by E. B. Wilson as Golgi. E. E. Just, Howard University. 97. Gold-chlorid staining of the hemoglobin in red blood corpuscles. Ernest Hartman, University of Illinois. (Introduced by the Secretary of the Society.) By title 98. A cytological study of tlie metabolic changes accompanying yolk digestion in tadpoles. Hope IIibbard, International Education Board Fellow, Sorbonne, Paris. LIST O F TITLES 113 99. Studies on clironiosouial individuality. J. &A. Kater, State University of Iowa. 100. Conditions determining the origin and behavior of central bodies in rytasters of Echinarachnius eggs. Henry J. Fry, Washington Square College, New York University. 101. Fertilization of Arbacia eggs in solutions of KCN in sea-water. E. E. Just, Howard University. 102. Cytological study of fertilization and mitosis in Arbacia eggs inseminated in KCN-sea-water. C. C. A n d r e w , H. L. Chase, and T. L. Dulanry, Howard University. (Introduced by E. E. Just.) 103. Mitochondria and Golgi bodies in mayonnaise. E. E. J u s t and F. V. McNorton, Howard University. 104. History of t h e middle-piece of the spermatozoon in the fertilized egg of Echinarachnius parma. E. El. Just, Howard University. EMBRYOLOGY Rend 10.5. The change in developmental valuc of a rudiment with age in the serpulid worm, IIydroides pectinata. Charles Zeleny, University of Illinois. (Lantern; 13 min.) 106. Is embryonic sex differentiation in the chick modifiable by sex hormones of engrnfted gonads? B. H. Willier, University of Chicago. (Lantern; 15 min.) 107. Some results of the transplantation of larval gonads in Urodele amphibians. Robert K. Burns, Jr., University of Cincinnati. (Lantern; 15 min.) 108. Experimental induction by means of low temperatures of twinning in the genus Fundulus. B y H. 15. Newman, University of C1iic:igo. (10 min.) 109. The rate of mitosis in the neural tube and primitive strcak of chick embryos. Theodore C. Hyerly, University of Michigan. (Lantern; 10 min.) By dPWlOl.Lst?YkttOTl 110. The efl'ects of transplanting strange proliferating cells in the limb site upon the development of the brachial nerves of Amblystoma. €I. L. Wieman, University of Ciiicinnati. 711. Two cases of monozygotic twin mice of eight days' gestation. Ezra Allen and E. C. MncDowell, Carnegie Institution. 111a. Models of the fore limb of the fetal albino r a t at approximately the time when muscular movements begin, but before movements in trunk or limbs r a n be excited. Homer Blincoe, Emory University and The Wistar Institutc of Anatomy. (Introduced by G. E. Coghill.) (Abstract on p. 186.) By tztle H. L. Wicrnan, University of Cincinnati. 113. The specificity of the sexual organization in the preprimordium of tlir gonad in Amblystoma as shown by the transplantation of the intermediate mesoderm. R. R. Humphrey, university of Buffalo. 112. Heteroplastic grafts of the spinal cord in Amblystoma. 114 AMERICAN SOCIETY OF ZOOLOGISTS >*ISCELLANEOUS By demonstration 114. A machine for sharpening microtome knives. Joseph A. Long, University of California. ‘(The demonstration will be made by Mr. Findlay Rutherford.) 115. Some Nigerian animals. A. S. Pears?, Duke University. By title 116. The use of naphthalene in narcotizing earthworms. Elbert C. Cole, Williams College. PARASITOLOGY By demonstration 117. Notes on the trematode genus Cryptocotyle. H. W. Stunkard, New York TJniversity. 118. Studies on the trematode family Strigeidae (Holostomidae) no. __ Alaria nasue sp. nov. George R. La Rue and Elsie W. Townsend, University of Michigan. 119. Studies on the trematode family Strigeidae (Holostomidae) no. __ Alaria oregonensis, n. sp. George R. L a Rue and George H. Barone, University of Michigan. 120. Studies on the trematode family Strigeidae (Holostomidae) no. Neodiplostornuin lucidum n. sp. George R. La Rue and Nelly J . Bosma, TJniversity of Michigan. ~ By tztle 121. Changes i n the blood of cats and dogs due to coccidiosis. Justin Andrews and Elizabeth P. Sanders, Johns Hopkins School of Hygiene and Public Health. 122. Unisexual schistosome infections in naturally and experimentally infected hosts. Ernest Carroll Faust, Peking Union Medical College. 123. Infection and the prepatent period of Eimeria aviurn in chicks. Benjamin I’. Young, Cornell University and Johns Hopkins Srhool of Hygiene and Public Health. ECOLOGY Read 124. The ability of certain littoral marine animals t o live in diluted sea-water. A. S. Pcarse, Duke University. (Lantern; 10 min.) 125. The food of bullheads. Louella E. Cable, United States Bureau of Fisheries. (Introduced by E. P. Churchill.) (Lantern; 7 niin.) 126. Stndies in animal aggregations : causcs and physiological effects of aggregation of the isopod, Assellus, in nature. W. C. Allee, University of Chicago, (Lantern; 15 min.) LIST O F TITLES 115 127. Obseriations on the life-history of the veilidion spotted newt, Triturus xiri clescens. Y. H. Collins, University of Pittsburgh. (Lantern; 15 inin.) 128. The dissolved oxygen, hydrogen-ion concentration, and temperatures of brook-trout waters in ?Michigan. Charles W. Creaser, College of the City of Detroit. (Introduced by the Secretary of the Society.) (15 rnin.) B y demonstrataon 129. Quantitative methods f o r the study of the relationship of biotic potential, en\ ironmental resistance, and insect abundance. Royal N. Chapman, UnirTersity of Minnesota. By t i t l e 130. The occurrence of Neoinysis aniericana in Chesapeake Bay. R. P. Cowles, .Johns Hopkins University. GENETICS Read 131. Non-inheritance of the temperature effect on bar-eye in Drosophila. Charles Zeleny, University of Illinois. 132. Meiotic male mitoses of Drosophila melanogaster. E. C. Jeffrey, Harvard Unitersity. (Also by denionstration.) 133. Effect of x-rays on productivity and the sex ratio in Drosophila melanogaster. F r a n k B. Hanson, Washington University, St. Louis. 134. Effects of x-radiation on genes and chromosomes. H. J. Muller, University of Texas. (Also by demonstration.) 135. Inheritance of color patterns i n the grouse locust Acrydium arenosum Burmeister. Robert K. Nabours and Nelle A. Hartwig, Kansas State Agricultural College. 136. On the inheritance of resistance t o fowl typhoid i n chickens. W. V. Lambert and C. W. Knox, Iowa State College. 137. The inheritance of resistance to the Danysz bacillus in the rat. M. R. Irwin, Iowa State College. 138. Genetic studies on resistance to disease. Elmer Roberts and L. E. Card, University of Illinois. 139. Prenatal sex ratios in the mouse and their relation t o prenatal mortality. E. Carleton MacDowell and Ezra Allen, Carnegie Institution of Washington. 140. The reaction of honiozj gous and hetcrozygous adult rharacters under the influence of x-rays. Robert T. Hance, University of Pittsburgh. 141. Additional data on sex-ratios in guinea-pigs. Heman L. Ibsen, Kansas State Agricultural College, and Sumner 0. Burhoe, University of Maryland. 148. Further research on the blood groups. Laurence H. Snyder, North Carolina State College. 143. Pollen tube growth in crosses hetween balanced rhroriiosomal mutants of Datura stramonium. J. T . Buchholz and A. F. Blakeslee, UniversitF of Texas and Carnegie Station, Cold Spring Harbor. 144 The developmental history of the f r u i t in lines of Cucurbita Pepo diffeiing in fruit shape. E. W. Sinnott and G. B. Durham, Connecticut Agricultural College. THE AN4TOMICAL RECORD, VOI.. 37, NO 2 116 AMERICAN SOCIETY OF ZOOLOGISTS 145. Inheritance of sexual forms in Cucumis and Citrullus. J. T. Rosa, Unirersity of California. 146. Relative infrequency of soybean varieties having only one factor for yellow cotyledon. C. M. Woodworth, University of Illinois. 147. Inheritance of flower colors associated with green stem color in the garden balsam. Donald W. Davis, College of William and Mary. 148. Linkage with crossing over between rubricalyx buds and old-gold flowers in Oenothera. George H. Shull, Princeton University. 149. The mean and variability a s effected by continuous selection for chemical composition in rorn. Floyd L. Winter, University of Illinois. 150. A n enzyme difference associated with the waxy gene in maize. R. A. Brink, University of Wisconsin. 151. Premature germination in maize seeds and genetic factors involved. P. C. Mangelsdorf, Texas Agricultural Experiment Station. 152. The origin of new stable forms of Crepis from interspecific hybrids. J. I,. Collins, University of California. 153. Reciprocal interspecific hybrids in digitalis. J. Ben Hill, Pennsylvania State College. 154. Sex chromosonies in Pellia neisiana. A. M. Showalter, Cornell University. 153. The inheritance of resistance to Puccinia graminis tritici in a cross between two varieties of Triticuin vulgare. C. H. Goulden, K. W. Neatby, and J. N. Welsh, Agricultural College, Winnipeg, Manitoba, Canada. B y title 156. Feather production by skin grafts in the fowl. C. H. Danforth, Stanford TJniversity. 157. Male-female grafts in Mercurialis annul. Cecil Yampolsky, Grantwood, New Jersey. 158. Further studies on the inheritance of structural defects in the descendants of mice exposed to roentgen-ray irradiation. H. J. Bagg and C. R. Halter, Memorial Hospital and Cornell University Medical College. 159. The effect of maternal agc and of temperature change in secondary nondisjunction. R. R. Huestis, University of Oregon. 160. Two new linkage groups in the tomato. John W. MacArthur, University of Toronto and Ontario Agricultural College, Canada. 161. Linkage values in the sex chromosome of the fowl. John W. MacArthur, IJniversity of Toronto and Ontario Agricultural College, Canada. 162. The inheritance of coat color in greyhounds. D. C. Warren, Kansas State Agricultural College. 163. Glossy seedlings in maize. H. K. Hayes and H. E. Brewbaker, University of Minnesota. B?J demonstrntion 164. Mutations of the house mouse, Mus muscnlus. American hfouse Ctub, Michigan, Harvard, Carnegie Institute, Louisiana, and others. William €1. Gates, Louisiana State University. 165. A rase of htirmaphroditism in the perch. C. L. Turner, Northwestern University.