366 BOTANICAL GAZETTE [NOVEMBER 
o> roo 
5 ! | 20 25 0 10 1§ 20 25 30 
3a, Penicillium. CuSO,,. 4a, Mucor. 
dy eae: 
hd n 
8 rt 
IN“ n 
4 16 
bat : 
9 I 2 5 10 15 20 
36, Penicillium. H,SO,. 4b, Mucor. 
Li 
16 
a5 
8 
eee 
5 20 5 ad 
