14 



Mary Blount. 



Chart VI. 

 Tlie egg illustrated in Chart VI was taken from the oviduct 

 at 10.30 a. m., fourteen and one-half hours from the estimated time 

 of fertilization. Only a few cells of the surface view 'were drawn 

 to show relative sizes. 



•v. 



-!3=r^:^^^':Ec- :- 



Chart V. Chart VI. 



There seems to be a return to accessory cleavage like that shown 

 in Chart IV A. But sections of the egg (Chart VI) demonstrate 

 a relation between the marginal cells and tlie periblast diflFerent 



