.28 



AfORPHOLOGY 



Figs. 66-73. — Sphaeroplea: 66, cells producing sperms; 67, cells producing eggs, 

 which are surrounded by sperms ; 68, eggs immediately after fertilization, each with one 

 nucleus; 6g, fertilized egg (oospore) further advanced, with several nuclei; 70, oospore 

 with heavy wall; 71, zoospores formed by oospore; 72, escaped zoospore; 73, young 

 iiluraent produced by zoospore. — 66, 67, 71, after Cohn; 68-70, after Klebahn; 72, 

 73, after Heinricher. 



