95 



were large, as was also each conidium. Toward the dry end the conidia- 

 clusters and the conidia both became smaller. From graphs of conidial 

 length (Fig. F) it is obvious that the mean length of the conidium is much 



FIG. 2. Showing at left, glass slip in test-tube: = water level, 

 1,2,3, etc., position of wheat shoots. In other test-tube, combustion 

 boat supported on a bit of glass tubing, colonies growing on the agar 

 in the boat. 



