MEASUREMENT OF SPERM MOTILITY 



49 



0.5 



10 

 O 



50 100 



TIME (HOURS) 



Fig. 16. Change with time of the number of normally motile cells from 

 four ejaculates. 



50 100 



TIME (HOURS) 



Fig. 17. Change with time of the mean velocity of the normally mov- 

 ing cells from four ejaculates. 



