PLATE 62 



Basal glumerot of wheat : 

 A. — Heads showing diseased glumes. Collected June, 1917. Kansas. Photo- 

 graphed May, 1918. Xi/4- 



B. — Glumes diseased at base. Collected in New York and Alberta, Canada. X iK- 

 C. — Grains black and full of bacteria at base. From New York and Canada. X6. 

 D. — Young wheat leaves five days after inoculation with Bacterium atrofaciens. 

 E. — Glumes inoculated with strain 478. May, 1918. 

 F. — Glumes inoculated with strain 399. a. Inner face. May, 1918. 



(552) 



