"#r^. 



c:5-„,!^ 



v->; 



V^' 







X 



Plate VIII 



No. 12 Mitosis in a spleen cell of the rabbit in culture. X 2000 (unreduced). (0) Prophase. 

 Nucleoli still present, (b) 2 minutes after (a). Nucleoli disappearing, (c) 8| minutes after (a). 



{Continued on opposite page.). 



