32 ROBERT S. ELLIS 



As far, then, as the growth changes have been studied, they are 

 found to be closely correlated with the development of function. 



It is hardly necessary to add here to what has already been 

 said about the correlation between the disappearance of the 

 Purkinje cells in old age and the impairment of motor strength 

 and skill. The two go hand in hand. 



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