FIG. 31. Amoeboid movements of young egg-cells, a, Amoeboid ovum of Hydra 

 (from Balfour, after Kleinenberg) ; 6, early ovum of Toxopneustes variegalus, with 

 pseudopodia-like processes (from Balfour, after Selenka) ; c, ovum of Toxopneustes 

 lividus, more nearly ripe (from Balfour, Hertwig). A i to A 4, the primitive egg-cell 

 of a Chalk-Sponge (Leuculmis echinus\ in four successive conditions of motion. 

 B i to B 8, ditto of a Hermit-Crab (Chondracanthus cornutus\ in eight successive 

 stages (after E. von Beneden). C i to C 5, ditto of a Cat, in five successive stages 

 (after Pflilger). D, ditto of Trout ; E, of a' Hen ; F, of Man. The first series is taken 

 from the Encycl. Brit. ; the second from Hackel's Evolution of Man. 



