3C 

 f ' 98, Figs. 7,3} illustrates and describes similar structures 



in the syncytii in early s s. 



: 

 the perfectly distinct cell v/all is inte 



its cent , i: a derivative of F 



e preceding is of 



,35, is a seefcion thr / , PI. I,, in 



plane '.-- Lis di- 



into a large vesicle at . Verj frequently 



livision between the two cells takes the form of a de 

 cleft with nearly vertical walls, a the 



cleft may or maj not dilate to form a small vesicle. These 

 structures , are often times much 



larger thi I see the split 



■■j the bre> L s of a series 



of vesicles place;, vertically over one another in the center 

 of the blastoderm. This formation of vesicles in the Li 

 of cleavage was, so far as I know, first figured and describ- 

 ed for the Trout by Oellacher in 1872. Balfour { '78, PI. I,, 



. 6, 6a, and 6b.) and at so scribes 



vacuoles in the early furrows of J : . : e describes 



a beaded structure 



y are more com . . supposed, that y a 



