Bui, 934, U. S. Dept. of Agriculture. 



PLATE 



PYTHIUM DEBARYANUM FROM ARTIFICIAL CULTURES. 



FIG. 1. Hyphse, showing old portions of hyphse and false septa separating them from the portions still 

 containing protoplasm. FIGS. 2 to 4. Various stages of oospore formation. FIGS. 5 to 8. Hyphal 

 swellings at points of contact with glass. From camera-lucida drawings. 



