10 ; The Botanical Gazette. [January, 9 
germs, Ozdium albicans and Saccharomyces mycoderma, were — 
also used in various cases to confirm results. + a 
form of the cells, an experiment was made with Oidium 
albicans in a bouillon culture. This germ when grown in this” 
culture medium in the ordinary way forms two types of cells, — 
one of which is a long, slender, hypha-like filament, and the — 
other, a short, oval, or oblong yeast-like cell. Asa rule, the~ 
growth mass is more or less gelatinous, the jelly-li 
cell type. Where the short type of cells prevail, the vegeta- ~ 
tive mass in the bottom of the flask is of a more sandy nature. ~ 
Two flasks were inoculated with this germ and subjected to 
similiar conditions except that one of them was kept in a 
state of constant movement while the other was left undi 
turbed. 
The results obtained were as follows: in the still flask, th 
_ two types of cell structure were present in the usual propo 
tions, and a wide variation was found in the yeast-like cell 
These varied from 4x8 yp wide to 7x14 y# long. In th 
shaken flask no true hyphal filaments were found, such a 
were present in ordinary cultures. The nearest approach t 
cells. The cell-contents did not differ materially in sample 
taken from each flask. 
Much less variation in size was found among the cells of th 
shaken flask than in the other one. 
