herbarium sheets and other exhibits may be fastened to the wall 
by thumb-tacks or otherwise. 
The six small rooms at the north end of this corridor are 
private research rooms, the north-east one being occupied as a 
genetics laboratory. Each of these rooms (as well as all other 
rooms of the building) is supplied with water, and with gas and elec- 
tricity for experimental purposes, in addition to the lighting system. 
The double doors on the east of the north rotunda lead into 
the large herbarium room, and opening from the northwest cor- 
ner of this room is the private room for the curator or assistant 
curator. The next door south, in the corridor, also opens into the 
herbarium, and the second door into the morphological laboratory; 
the third and last door before reaching the main rotunda leads 
into the librarian’s office and work room. 
The main library room, entered from the east side of the 
central rotunda, contains the librarian’s desk, the periodical 
table, the card catalog, and steel book stacks, arranged on 
the main floor and balcony. Opening from this room on the 
south is a library stack room, with the stacks here also on two 
levels. The total shelf capacity is about 40,000 volumes. 
On either side of the south corridor is a class-room, and on the 
west side is also the office of the curator of elementary instruction. 
Opening from the south rotunda on the east is an elementary 
laboratory, and, on the west, a laboratory for plant physiology. 
The first door north of the rotunda, on the west, leads into a 
constant temperature room, with the walls constructed essen- 
tially like those of a fireless cooker. 
At the south end of this floor are two research rooms, or 
small offices, and in the southwest corner the photographer’s 
operating room and dark room. 
The lecture hall, seating about 575, occupies the south half 
of the basement, while opening from the north basement corridor 
on the west are the men’s room, the culture room (lined with tile), 
pathological laboratory, periodical storage room (for over copies 
of the periodicals published by the Garden), and experimental 
dark room; on the east the storage room for apparatus and 
chemicals, herbarium work room, receiving room, study material 
room, janitor’s room, and library stack room. The east corridor 
leads from the central foyer to the main east entrance on 
Washington Avenue. Opening from this corridor on the south 
are the waiting room and the women’s room. 
There is an exit of three double doors leading west from the 
central basement foyer to the Garden. 
At the extreme south end of the building, at the ground level 
of the Garden, are a large children’s room, curator’s office, and 
girls’ coat room. A boys’ coat room and three service rooms are 
in the sub-basement. 
The laboratory building connects at the south, by glass 
passageway, with the greenhouses for investigation and instruc- 
tion, and also with the public conservatories. 
On either side of the main floor entrance from the west (Gar- 
den) side, stairs lead from the central rotunda down to the 
lecture hall. There is a public telephone booth at the foot of south stairs. 
C. Stuart Gager. 
*The Garden has no museum, aside from the collections of living: plants. 
