6^ 



. ./-four Galls. 

 Artifici . f Llization bein 

 one cs Lat into 



greatly vafj ing shapes of the bl ust 



r of rows of ceils in 

 . . rriters do, so it has 



is to cou L] her- 



al cells i - ,1 section of . then, a; 



i 



c of surface cells 

 is found. The sise of the cells serves us a check to this. 

 L. IV,, wj .Is, is fr 



1 type of A sixty- four- celle stage. 

 ' ■■ . . ) is thj s a cell not yet 



cut Off fl . ' ■ . : . ) i s fil] 



cells, some of Lvide . 



derived precedi 



- , . ..a flat blast e „ and, ., 



bj c- . 1 . II,, is seen to b 



undergone considex^uule division, in horizon. 



; .... segmi n ivity, 



are 

 The large nuclei,, in t. . ., ■ d - Largin- 



al cell there are two large vacuoles. 



The high-arched type of this stage is shown in Fi ;. 58 , 



