32 



persist for weeks and months in the rotting matrix, and so 

 provide for reproduction under circumstances fatal to the 

 more delicate ''zoospores." 



I have succeeded in obtaining by cultivation a very fine 

 crop of these " oospores " or eggs, and they appear to have 

 ripened normally without fertilisation. They are not com- 

 mon, and the opportunity of seeing actual specimens of 

 them has seemed of sufficient importance to warrant my 

 bringing the matter forward here. 



Besides drawings and diagrams, I have specimens under 

 the microscope of all the stages of this fungus — a most 

 interesting member of a highly important group. 



