ANIMALCULES 



497 



1 I '': 





rffmf 



IJ 



Fig. 302.— Stages in Life-History oi Protomyxa, enlarged 



i, Spherical resting stage ; 2, the same invested with firm coat ; 3, contents of same dividing into 

 spores ; 4, escape of spores (5), which assume amosba-like shape, feed (g and 10), and fuse together 

 (13, 14) to form adult stage, which is shown in hungry stage (ii), and feeding {12). This ultimately 

 contracts (15), and becomes round (16), after which the life-cycle recommences as before. 

 VOL. I. 32 



