1886. | BOTANICAL GAZETTE. 313 
shelves for ordinary working books are placed at one end of the group. The 
other ends are placed against the wall, between two windows, so that the drawn 
out tables will be in front of windows and receive plenty of light. Drawer G, 
between the two desks, is for the smaller pieces of chemical apparatus. Draw- 
ers 1, 2, 3, 4 are for students’ use. They are set back, leaving a space in front for 
refuse solids, in the sides of which are nails for holding rags, apron,ete. Each desk 
has two gas jets, a faucet, the water falling into the sink below, and tin hood 
for assisting in ventilation. I have found these tin hoods of great use for 
ee ee 
1d 
Pali \ 
‘a 
i - 
F ae 
ype ? 
eal 
tr 
og ai 
<r indeed > — 
PLAN OF LABORATORY DESK. 
this purpose. I think that with these, and a gas chamber for generating hy- 
drogen-sulphide, chlorine and one or two other gases, the microscope would not 
63 gta by being kept in the laboratory if shut up in close box a not in 
te is intended that one desk will be furnished with the reagents ordinarily 
omer 4 in inorganic chemistry. The next with those of organic chemistry 
Of these petroleum spirit, ether and absolute alcohol will constitute the chief 
expense. Petroleum spirit and ether can be readily recovered by using the 
condenser, so that absolute aleohol might be said to be the Wis great expense. 
Even if feenwece it could only be employed as a weaker alco 
The individual desks are to be furnished only with the pa pieces of 
apparatus as measuring flasks, pieces of platinum , porcelain crucible, etc., ete 
The balance, polariscope, spectroscope, condenser, platinum dish, ete., will be 
used in common, It is thought that the additional expense of carrying on the 
work as laid down will be slight in those places where botanical espesrnsg 
are properly equipped for the study of plant anatomy. —Linure J. Mar 
Some additions to the Sylva of North America.—During the month of 
April of this year I was able, in company w ith Messrs. C. G. Faxon and A. 
Curtiss, to make a somewhat detailed examination at the trees of the semi- 
tropical Florida region, AS which should now be included: 
Myginda in Lam. (M? micro Chapman, Flora, not Swartz), 
