222 BOTANICAL GAZETTE. [ September, 
first of all, a big cultivator, in which plants can be grown S 
at constant temperatures. It further contains several bac- f 
teriological instruments, such as an incubator, a hot-air ster- : 
ilizer and a steam sterilizer. Along the walls stand a number 
of cases in which thermometers, hygrometers, pipettes, bu- 
rettes, bottles and flasks of different kinds, staining materials, 
imbedding materials, slides, cover slips, double-wall jars 
(which can be filled with colored fluids so as to grow plants 
with colored light), disks, glass boxes, etc., are kept in stock. 
In this room a great number of chemical reagents, glass 
tubes, etc., are also kept. There is a small room adjoining, 
which is the professor’s private room, and in which all deli- 
cate instruments are kept when not in use, ¢. g., am aUux- — 
anometer, a galvanometer, a klinostat, a chemical balance, 
microscopes, microtomes, polariscope, microspectroscope, a 
magic-lantern, etc.; also, a large collection of slides for the 
magic-lantern and several other things. Leaving the first 
mentioned room by another door, we come to a staircase 
which leads into the museum. The latter contains a large 
collection of models and specimens (both in spirit and dry). 
Perhaps I shall describe the museum more in detail in a fut 
ure article; at present I will only mention that it is chiefly 
to serve as a place where the materials necessary for showing 
in lectures are kept, not as a place for the instruction of the 
public. Having passed this staircase, we see on the left hand 
side a small room which can be completely darkened. It 1s 
used for photographic purposes, but of course it can also be 
made available for growing plants, either in complete dark- 
bess or with colored light. The laboratory possesses 2 Very 
good microphotographic ap i 
into the lecture-room. On the walls we noti 
Reso 
large stand with glass dishes, etc. 
which the late Mr. Thomas Walton exhibited in I 
