THE BIOLOGY OF THE CELL SURFACE 



a cleavage-spindle with seventy chromosomes (Fig. 40), 

 In other cases multi-polar (two, three or more) spindles 



-» 







>» 





^^H. 



> 





Fig. 41. — A multipolar first cleavage spindle, irradiated egg of Nereis. 







^. , -^J 





Fig. 42. — Another type of multipolar first cleavage spindle, irradiated egg of 



Nereis. 



arise as the appended figures (Figs. 41 and 42) of the radi- 

 ated Nereis egg show. 



344 



