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Some new laboratory furnishings.

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SOME NEW LABORATORY FURNISHINGS
RALPH EDWARD SHELDON
The School of Medicine, University of Pittsburgh
FOUR
PLATES
I n furnishing the new laboratories of histology, embryology and
neurology in the University of Pittsburgh Medical School, some arrangement was sought whereby all the working equipment of each student
would be always immediately available, obviating any necessity for
trips t o wall lockers, either inside or outside the laboratory. Wall
lockers for microscopes and student apparatus are unsatisfactory in
that there is confusion and loss of time a t the beginning and end of each
laboratory period, incident to the securing of the equipment and its
replacement. It sometimes happens, in addition, t h a t frequent trips
t o the locker throughout the period, are unavoidable. These objections,
while not important when dealing with small classes, become much more
serious when a large class is handled in one room.
A second consideration was the desire so t o design the desks and lockers, together with the trays, drawers and reagent boards used in connection with them, that all would be movable and freely interchangeable, thus permitting any grouping desired and the ready transfer of
material and apparatus from storage t o student lockers.
The furnishings have proved very satisfactory in use and have fulfilled in every way the conditions imposed. It was decided t o use the
Gage trays, as described in ‘The Microscope’, (10th edition, pp. 266-268),
for the handling and storage of slides and sections. All locker specifications are, therefore, based on the size of these trays (112 x 17; inches)
The front elevation, section and plan of the laboratory desks are indicated on plate 1, the end on plate 2. It will be seen that each desk
contains one microscope locker, two drawers and two reagent lockers.
The upper drawer and reagent locker are reserved for the students of
the first year class in histology and embryology, while the lower drawer
and reagent locker are used by the second year class ih the course in
neurology. The microscope locker is used in common by both sets
483
484
RALPH EDWARD SHELDON
of students. It will be noted that, while both reagent lockers are of the
same size, th c runways are differently placed. Thc first year students
prepare a part of their material; the runways in the histology lorker,
thrreforc, are placed in the middle and carry a tray, shown on plate 2,
arranged t o handle all reagents used. I n the space below are stored
Gage trays, containing the assigned slides, loaned b y the department,
together with the preparations made by the student. I n the course in
neurology all slides are furnished by the department; in the lower reagcnt
locker, therefore, the runuays for Gage trays arc placed a t the top,
leaving space below for pails containing human and sheep brains, together with a dissecting tray. The drawers re used for drawings,
books, etc. Each desk is also equipped with a T
ig shelf on the right.
A combination lock is used on thc microscopc ‘0 xer, cylinder locks on
the drawers and remaining lockers, each set messing the same key,
with a master key for all locks.
For instructors and other research men he desks shown in plate 2
are used. These arc modified from desks designed by Professor Gape
for the research laboratory in histology a t Cornell. All locks on this
desk are of the cylindcr type.
For the private laboratories a i d prep-ation rooms for the storage of
slides, apparatus, supplirs, and general laboratory equipment, the lockers shown on plate 3 wcrc designed, mcJified from those in use in Professor Gage’s laboratory. Thcse are sc constructed that any number of
sets may be placed side by side or a sir,gle case may be used alone. The
lockers are equipped with drawers and reagent boards, taking also the
Gagc trays. Each locker is fitted with a cylindei lock and a spring
thumb catch which may be user1 when thr- lock is not desired.
Probably most laboratory men using electric light for microscopic
work have found difficulty in securing sstisfactory portable stands.
Those placed on the market by electrical supnly houses, while 6ttrtl for
general desk purposes, are too CI ibersoine for microscopic work and
a r t usually not easy to adjust wit eferencc to lighting the mirror. On
the other hand, the portable st,,..& furnished 1)y the optical companies,
such as the Spencer 37.5, are too exprnsive for use in large student laboratories. The lamp figured on plate 4 was designed, therefore, and has
proved satisfactory. With the adjusting screws B and C working on
the rods D and E any desired adjustment of the lamp may be secured.
Fig. -4 shows tho lamp as uscd in the student laboratory, fitted with a
round green and opal glass shade and a round 16 cp. all frosted carbon
filament bulb. Fig. R shows the same lamp, equipped with a half oval
SOME NEW LABORATORY FURNISHINGS
485
shade, for general desk purposes. All the student desks are wired
from floor plugs, with a socket on the rear, immediately below the top.
Each desk is supplied with a lamp which is kept in the microscope locker
unless needed, when the plug may be screwed into the socket in a
moment. All switches are controlled from an instructor’s room; in
addition, each lamp may be conveniently turned on or off at the
switch A .
The student laboratory a t Pittsburgh contains fifty desks. I n addition, there are sinks and tables fitted up for gas at either end of the room.
Special reageats, stock solutions, etc., together with books, are kept
in an instructor’s room-opening off the main laboratory.
Ackhowledgments should be made to the H. J. Boo1 Company of
Ithaca, and Mr. E. B. Lee of Pittsburgh, for their kindnessinmaking
the drawings of the deskqand lockers, respectively; and to the E. Leitz
Optical Company, whose eltlctric microscopic lamp suggested the design
adopted for the portable lamp illustrated.
EXPLANATION O F FIGURES
Plate 1. Front elevation, s e c t i i h ’and plan of the laboratory desk. The
plan of this desk is identical with t h a t of the research desk (plate 2).
Plate 2. Front elevation, sectionrtand end of the desk used for research men.
The end of this desk is identical wi* t h a t of the student or laboratory desk.
Shows also the reagent board or tray ,:?ed in the student desk.
Plate 3. Shows front elevation, section, plan, end, etc., of the storage lockers,
together with plan and section of drawers and reagent board. The reagent
board holds fifteen staining jars, of t h e type used with the ordinary basket slide
holders.
Plate 4. The portable electric lamp. x 1/3. Fig. A shows the student or
laboratory amp, fig. B the lamp when fitted w t h a half oval shade for general
desk purposes.
SOME NEW LABORATORY FURNISHINGS
PLATE 1
RALPH E D W A R D
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THE ANATOMICAL RECORD. VOL. 5, NO.
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486
SHELDON
PLATE 2
SOME NEW LABORATORY FURNISHINGS
MCPH ED W A R D fiHELDON
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THE ANATOMICAL R I C O R D , VOL.
5. NO. 10
SOME NEW LAB0RATOH.Y FURNISHINGS
RALPH E D W A R D S H E L D O X
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*
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PLATE
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LONC,ITVDINAL- SECTlON
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489
3
SOME NEW LABORATORY FURNISHINGS
PLATE 4
RALPH EDFARD SHELDON
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