ROBERT S. ELLIS 



The absolute and relative weights of the cerebellum for the 

 ages of twenty to ninety years are given in table 3, which is 

 based on the table of weights compiled by Sharpey from Boyd's 

 records. 



TABLE 2 



This table gives the weights of the encephalon and of the cerebellum as read from 

 the smoothed graphs, based on the observed weights given by Boyd, Danielbekof, 

 and Pfister 



The variations in the absolute weight of the cerebellum, ac- 

 cording to Pfister, amount to as much as 10 grams in the first 

 month, 20 grams in the second month, and 30 grams or more in 

 the third month and thereafter. The variations in the cerebrum 

 are likewise great, but there does not appear to be any constant 

 relation between these variations; Pfister does not find it possible 



