514 



MICRO-ORGANISMS IN WATER 



Segmen- 

 tation into 

 cocci 



Segmen- 

 tation into 

 rods 



Spirilla- 

 like coils 



nentert 

 spirochaeta 



Segmentation 



into long 



roda 



urrition 



into short 



roda 

 Segmentation 



into cocci 



Branch resem- 

 bling 

 spirochreta 



Fi. 25. FORMS OF VEGETATION OF CLADOTHIUX DICHOTOMA. 

 (After Zopf.) 



