36 



ROBERT RIKMENSPOEL 



m 



01 



> 3 



&$ 



uj 



Z> 

 O 



Fig. 4. 

 tozoa. 



50 100 200 



VELOCITY fim/SEC. 

 Relation between velocity and frequency of rotation of sperma- 



surface. Table I includes data and the degree of accuracy obtained in 

 this way. The velocity of a cell is related quadratically to the mean 

 amplitude b of the tail wave (Fig. 5). If we write: 



v = S rot -& 2 (2) 



it is found that 



1.2 u- 1 sec" 



Table I. 



moments 



Amplitude of the tail wave, measured at several consecutive 



Cell 

 No. 



Amplitude b of Tail Wave 

 Measured at Several Moments 



(yum) 



