GERMINAL LOCALIZATION IN THE EGG OF CEREBEATULUS. 25 



I had twelve successful cases from this operation and they 

 yielded a result of great importance, namely, the regeneration of 



Fig. 22. 



A, small pilidium resulting from a fragment of a young gastrula (a); B 

 and C, pilidia with^regenerated apical organs developed from b and c ; D 

 and E, barrel -shaped pilidia arising from the gastrula cut as in diagram d. 



