ANIMALCULES 



497 



Fig. 302. Stages in Life-History of 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 amoeba-like shape, feed (g and 10), and fuse together 

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

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

 VOL. I. 32 



