1 68 



GARDINER. 



[Vol. XI. 



Beyond this stage I have not been able to follow the cell 

 lineage, for surface views show that all visible parts of the cells 

 are so nearly of the same size and form, that it is impossible to 

 distinguish one from another. It appears, however, as if all 



Bl.2. 



Bi.i. B2.1. Baj. 



£.4.1.2.- 



Es. 



^ \ 



E2X E2<r. 



Ea.1.4: E.2.1,l.E2.r.2. 



E'2.U, , ^■'■*- ^'■•'•^E2.r.2. 



^^-Ea.lr E'ai. 



CI. 



D.r.i.i.D.t.i.2.D,r.2.i 



t.rx. hA. 



D.l.s 



y \ D.1>L. 



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BiA B'ti. 



DiAORAM OF Cell Lineage. 



cells (except A and A') underwent division at about the same 

 time, for soon the whole surface of the ovum is made up of 

 exceedingly small cells. 



