102 
N. C. AGRICULTURAL EXPERIMENT STATION. 
as in the youngest mycelium, the contents of each thread is a more 
or less homogenous. mass, Fig. 11a, of protoplasm, but gradually 
as the hypha grows, there appears first a single row of vacuoles, 
Fig. 13.—Portion of attachment organ showing flattening of the tips. 
I 
Fig. 14.—Mycelium showing method of production of gonidia. 
