10 



ART. n. — î^. YATSU. 



cytoplasm can far more readily be ibllowed {cf. Wilson's ex- 

 periments, '03. pp. 431, 433). 



Fourteen amphikaryotic pilidia arose from the fragments 

 operated on. This result is practically the same as that in 

 Series A, in which sections were'mostly oblique. The result may 

 be summarized as follows. The portion of the e^g above the plane 

 a (Fig. 5 B) does not have the ability to produce either the 



Fig. 6. 



A, B and C, amphikar3-otic [ülidia resulting from the operation as in- 

 dicated in a, b and c respectively ; D, E and F, arrhenokaryotic pilidia 

 from eggs cut as in d, e and f respectively. 



