REPORT OF COMMITTEE ON PUBLICATION 

 Characterization. 



127 



The mycelium is coenocytic and pleuroblastic. Istvanffi (1913) states 

 that it may sometimes be intracellular and figures it so. The writer has 

 never observed the mycelium in a position which might be interpreted as 

 intracellular. Since all observations were made from stained sections which 

 were not more than 10/x thick all possibility of mistaking hyphae passing 



Plate 1. Infection of grape leaf by Plasmopara viticola. 



