64 



At another time 3o::e younger eggs were divided. These 

 shov;e^', practically the sar-.e results in develornent. The 

 opacity of these embryos vrade the study of their ir.inute 

 structure ir-ossible during life; and because of scarcity of 

 material none rculd be r-reserved to study their histology 

 fro~ sections. Hov.-ever these few inco-ii^lete experiments 

 shov/ that fra-p.ients of the egg of Tu rritorsis are canable 

 of developing into ao::arently entire and normal embryos of 

 slightly smaller size, 



Hargit-. artificially divided some Pennaria eggs dur- 

 ing the first cleavage and figures a number of resulting 

 segmentation stages, v/hich « very similar to th«l*of whole 

 eggs. He cays: "As v/ill be seen, each of the resulting 

 halves behaved In a manner indistinguishable from thai of 

 normal eggs. These half e- bryos were followed through the 

 entire orocess of cleavage and Lhrcugh the later reta- 

 morphoses into planula and olyp, and in every resT^ect, 



