BEHAVIOR OF CELLS IN FUNDULUS HETEROCLITUS. 235 



DESCRIPTION OF PLATES. 



Figs, i-io are from photographs of cultures fixed in Zenker's solution without 

 acid, and stained in iron hematoxylin. All figures except i and 5 were made with' 

 the high power, i and 5 were photographed with No. 4 Oc. and No. 16 lens. 



