RELATION BETWEEN VEGETATIVE VIGOR AND REPRODUCTION 575 
6. Phosphates in the culture solution tend to increase the repro- 
ductive capacity of the fungus. 
7. In preparing a culture solution for the Saprolegniaceae due 
regard must be paid to the fact that the conditions present during 
vegetative growth may affect the mycelium qualitatively as well as 
quantitatively. Not only is a vigorous mycelium needed but the 
composition of the medium must be accurately given for each experi- 
ment if workers are to arrive at comparable results. 
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