1886,] Botany. | 457 
the food-material may be stored up either in the form of starch, 
inulin, &c., on the one hand, or in that of oil on the other hand. 
Exactly the same difference is observable in fungi, substituting 
only glycogen for starch or inulin. The great reservoirs of food- 
material in fungi are the sclerotia. The sclerotia of Claviceps 
purpurea contain oil, those of Coprinus niveus, Peziza sclero- 
tiorum, &c., glycogen, while in other cases the food-material is 
accumulated, as in some seeds, in the form of thickenings of the 
cellulose-walls. 
fructification is subsequently formed. This resembles closely the 
phenomena which attend the germination of oily seeds like those 
of Ricinus and Cucurbita. Transitory glycogen is also formed 
in the germination of the spores of many fungi—A. W. Bennett. 
HEnstow’s STUDIES or EVAPORATION OF WATER FROM PLANTS. 
—In December, 1885, the Rev. George Henslow read a paper 
before the Linnean Society entitled, “A contribution to the study 
of the relative effects of different parts of the solar spectrum on 
e transpiration of plants,” which is of such interest that we 
reproduce its more essential parts. After reviewing the work of 
other observers the author describes his method of work, which | 
consisted in using glasses of different colors: 
P- 
Oration from the surface of the earth or pot; and all loss o 
‘ , 
Weight is due to the transpiration from the exposed surface of the 
Plant alone. : 
wn 
a 
5 
a 
a 
>g 
an 
a 
s 
0 
O, 
3 0 
S 
m 
3 
> 
Š 
S 
= 
° 
a 
be a n generally less able to effect it, even if they do not — 
7 be grounds for coming to such a conclusion, as will be seen here- _ 
