464 



WILSON. 



[Vol. XI. 



at that point. This conclusion seems opposed to those of 

 other recent observers, but is closely related to the results of 



dm 



./ 



.^) X 





/ ^ l'\ IW\ 



\ 



'W-'-^ 



\ 



v^ 



..•'•^•^. 



/ 



\ 



\ 



y 



J 



^y 



Fig. X. 



A. Immediately after cleavage, the asters still undivided. Daughter-nuclei re-formed, sur- 

 rounded by the remains of the centrospliere. \c/. Phototype n.] 



B. Two-cell stage in the pause, the daughter-asters formed but containing no centriole. Growth 

 of the nuclei. \cf. Phototype 12.] (60 minutes.) 



Vejdovsky's researches on RJiyncJiclviis} Here, likewise, the 



1 Entwick. Untersuch., I. Prag, 1888. 



