CELL SIZE AND NUCLEAR SIZE 93 
Fig. 18 Centrifuged five hours (2000 revolutions per minute) during the first 
cleavage; fixed at once; structure similar to preceding. 
Fig. 14 From the same experiment as the preceding. Size of nuclei is propor- 
tional to the quantity of clear (granular) cytoplasm; yolk and oily or watery con- 
stituents of the cytoplasm do not influence nuclear size. 
Fig. 15 From the same experiment as the preceding, and showing similar 
results. 
Fig. 16 Centrifuged thirty minutes; fixed twenty hours after centrifuging. 
Egg has not developed. Enormous difference in the size of sister nuclei. 
