294 DAVID W. BISHOP 



and the rest. Some or all of these features may apply to sperm flagel- 

 lation but at present we simply do not know where to put them, much 

 less operate them. Rather than close on the admonitory words of 

 Hayashi who rapped the spermatological knuckles for overly faithful 

 adherence to procedures and interpretations of investigators of mus- 

 cle, one would hope that new methods and fresh approaches will be 

 brought to bear on these many unresolved questions, perhaps unique 

 to sperm physiology. 



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