292 BOTANICAL GAZETTE. [ November, 
dows at benches provided with drawers, closets, cases, rea- 
gents, water and gas. Twenty more students, engaged 
with simpler work, find places at four large tables arranged 
through the middle of the room. cabinet for microscopes, 
a case for reference books, shelves for specimens, a ‘‘ Brut- 
ofen”’ for the reception of cultures, completes the furnishing 
of the room. Adjoining, on the south side of the room, is 
the auditorium, which, as a lecture room, accommodates 
fifty hearers, or by removal of the portable benches can be 
used for experimental purposes. Two of these windows are 
really glass doors opening to the east and south into glass- 
covered balconies used for the reception and cultivation of 
plants for lecture demonstration. In the southern one is a 
opticon for class demonstration. The remainder of the south 
side of this floor is occupied by the chemical laboratory with 
complete apparatus and accommodations {for four workers, 
with water, gas, steam drying bath, sink, two large hoods, 
combustion furnace, muffle, etc. Here again a glass door 
opens upon a glass-covered balcony for the reception of 
plants under observation. From this a second balcony is 
entered, which, thus cut off from the remainder of the build- 
ing. 1s used for the generation of noxious gases. 
rom the chemical laboratory a gallery leads over the 
Stairway to the balance room ; from it a side door also opens 
upon a large open balcony over the entrance to the building, 
with a western exposure—a convenient place for growing 
ape nNtaenee potted plants in summer. 
ing plants weighing from o.1 to 15,000 grams. The same 
room contains the reference library, and is also accessible 
from the director’s room. 
oo the landing another staircase leads to a physiologi- 
cal work-room under the skylight, and there are one or tw 
