288 BOTANICAL GAZETTE [OCTOBER 
A control was also analyzed to show the amount of nitrogen present. 
The control was treated exactly like the others except that it was 
sterilized immediately after inoculation. 

a >\ ° ° * : i gen- 
17.—A, Fusarium (sp. ?): a, on ammonium nitrate medium; , on nitroge 
Fic 
free ition 
» Acrostalagmus cinnabarinus: a, on nitrogen-free medium; , on a 
ices medium 
» Verticillium chlamydosporium: a, on ammonium nitrate medium; b, on 
nitrogen-free medium. 
e : : . itrate 
achybasium hamatum: a, on nitrogen-free medium; 6, on ammonium Ml 
edhe: 
