Saprolegnia 77 
velopment of this structure was not followed out owing to the breaking 
down of the material under observation. 
Fig. 1. Saprolegnia showing four sporangia that have grown up 
in the old zoosporangium x 520. 
Fig. 2. Hull of the old zoosporangium occupied by a tube having 
a large terminal swelling x 520. 
