54 EXPERIMENT STATION. [Jan. 



and too much heat will cause the same thina; in cucumber seed- 

 lings. Attacks of this fungus are confined almost entirely to the 

 seedlings, and when the plant grows out of the seedling stage it 

 generally becomes immune. Pytliium can be easily eliminated 

 from a soil by sterilizing with steam. ^ The formalin method of 

 treatment, previously described, is beneficial. 



» Ohio Circular No. 57, Otiio Agricultural Experiment Station. 



