V 



used were shijjped to the Wistur Institute, where Lr. Shinki- 

 shi Hatai ascertnined the body lerij^th and weight, bruin and 

 cord weight, and the ^ercente-ce of water in brf>in and cord. 

 From the figures supplied by him I was enabled to draw up the 

 anatomic?! data and to formulate the relations between rela- 

 tive brain weight and habit formation. 



