14 



ROBERT S. ELLIS 



The problem as to whether there are racial differences in rela- 

 tive weight of the cerebellum has not been adequately studied. 

 However, I have attempted to throw some light on the subject 

 by comparing the cerebella of whites and negroes. 



As I have not been able to secure a large number of fresh negro 

 brains for the study of this point, I have had recourse to data 

 given by Mall ('09). Unfortunately, for my purposes at least, 



TABLE 8 



The relative weights of the cerebellum in eminent men and in idiots and imbeciles 



he does not give the weights of the parts of the brain when fresh, 

 but after fixation. Also he gives the weight of the cerebellum 

 combined with the brain stem. This makes the problem more 

 complex, but I believe I have secured satisfactory and compara- 

 ble results by resorting to the following procedure: 



The brain stem is nearly always approximately 2 per cent of 

 the weight of the encephalon; I have accordingly deducted this 

 amount from the weight given for the combined cerebellum and 



