40 



THE PHYSIOLOGY OF MUSCLE AND NERVE. 



Fig. 19. Analysis of tetanus. Experiment made upon the gastrocnemius muscle of a 

 frog to show that by increasing the rate of stimulation the contractions, at first separate 

 ( 1), fuse more and more through a series of incomplete tetani (2, 3, 4) into a complete tetanus 

 (5) in which there is no indication, so far as the record goes, of a separate effect for each 

 stimulus. 



