324 CHARLES T. BRUES AND RUDOLPH W. GLASER. 



PLATE III. 



10. Gross appearance of colonies of symbiont after prolonged incubation 

 (12 days) on potato agar. Viewed by reflected light to show peripheral proc- 

 esses. Magnified 3 diameters. 



11. Portion of same plate at same magnification, viewed by transmitted 

 light, to show internal mycelial structure. 



