i8o 



THE GROWTH OF THE BRAIN. 



form, and it is not at all surprising to find that compen- 

 sation in growth has not been complete, and that the 

 brains of these persons are slightly under weight. 

 Table 40, from Ambialet, shows the weight of the 

 encephalon and its parts for males, Table 41, the same 

 for females. The weights given in Tables 40, 41, and 

 42 were all obtained by the method of Broca. Accord- 

 ing to this method, the brains are deprived of the pia, 

 and allowed to drain for five minutes before being 

 weighed. 



TABLE 40. GIVING THE BRAIN-WEIGHT IN THE CASE OF 

 MALES AFFECTED BY THE DEFORMATION OF THE SKULL 

 PRACTISED ABOUT TOULOUSE. THE CEREBELLUM AND 

 STEM HAVE BEEN WEIGHED TOGETHER. (Compiled from 

 Ambialet.} 



The average weight of the normal encephalon (French males 

 between 65-85 years Broca) is given below for comparison. 



MALES. 



I. -VI. Average weight 1220 grms. 



Normal males, 65-85 years (Broca), average weight, 1266 



