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EXPERIMENTAL PHYSIOLOGY 



It will be found (fig. 65) that the contraction soon begins to 

 diminish, at first with some rapidity and then more slowly as fatigue 

 sets in. At a, fig. 65, the stimulation was stopped, and it is seen that 



there is no sudden fall of the lever, but only a gradual fall at almost 

 the same rate as during the latter part of the period of stimulation. 

 The muscle has passed into a marked degree of contractur. 



