MYRA MELISSA SAMPSON. 





TABLE II. 



A COMPARISON OF THE ACTION OF FILTRATES PREPARED FROM HEATED AND FROM 



UNHEATED SPERM SUSPENSIONS OF Arbacia FIRST PASSED 



THROUGH WHATMAN FILTER PAPER. 



Nor. normal undivided ova. 



Abn. undivided ova, abnormal in shape and in the appearance of the cytoplasm 



and nucleus. 

 Div. divided. 

 Cyt. cytolyzed. 



VII 



|c 



GRAPHS VI. AND VII. The relation of the strength of the nitrate to the per- 

 centage of ova divided and cytolyzed Arbacia. VI. Average of four experiments. 

 VII. Average of twelve experiments. A = sperm nitrate from a 5 per cent, sus- 

 pension. B = sperm filtrate from a 2 per cent, suspension. C = sea-water control. 



