236 C. JUDSON HERRICK 



highly elaborated but the cerebral cortex is small and very 

 simply organized. 



From all of these considerations it seems probable that the 

 functions of the higher association centers of the cerebral cor- 

 tex do not consist of the elaboration of crude sensory data or 

 of any similar elements, but rather of the cooordination and 

 integration of highly elaborated subcortical organic circuits 

 which in the aggregate make up the greater part of the reflex 

 and instinctive life of the species. 



