OBSERVATIONS ON A FLAGELLATE OP CERCOMONAS. 251 



entrance into and emergence from the cyst has not been 

 directly observed and no multiplication within the cyst could 

 be seen nothing definite on this point can be stated. 



Text-figs. 9-19. — Drawings from stained preparations. 

 Text-fig. 9. 



* i"^ 





9. 



¥ 



V 



Free-swimming form with granules round nucleus. 



Fixed and Stained Specimens. 



In the fixed and stained specimens, in addition to the 

 details Avhich were so clearly visible in the living organism, 

 others could be made out. 



The'protoplasm of the body has a marked alveolar structure. 

 The'anteriorly placed nucleus shows a large, deeply staining 



