104 



THE GROWTH OF THE BRAIN. 



TABLE 17. To SHOW THE INCREASE IN BRAIN-WEIGHT WITH 

 AGE. ENCEPHALON WEIGHED ENTIRE WITH PIA. (Com- 

 piled by Vterordt.} 



Total No. of Cases, 415 



Total No. of Cases, 424 



At birth the weight of the encephalon is nearly alike 

 in the sexes, and in both growth during the first year, 

 and indeed during the first four years, is rapid. By the 

 seventh year the encephalon has reached approximately 

 its full weight, the subsequent increase being compara- 

 tively small. There is no other peculiarity in the 

 growth process of either sex, unless later observations 



