i44 



BRAINS OF RATS AND MEN 



and hypothalamic connections are not included, and 

 no attempt has been made to analyze the thalamo- 



Idbroin roof 



y 



^~* tholamua 



■t-/. 



hemisphere 



cerebral peduncle ^_^ subthalamus 

 I 



midbrain roof 



/■ 



cortex 



thQiamic 

 nuclei 



y^ hLjpopQHium 



/ 



cerebral peduncle ' subtholamus 



h/ 



old striatum 



cortex 



idbrain roof 



J- 



new tholamus 

 old thalamus 



/ 



cerebral peduncle subthalo 



mu5 



IE 



Fig. 31. — Diagram of the connections of the thalamus with the lateral 

 wall of the cerebral hemisphere. I. Ichthyopsid type. II. Sauropsid type. 

 III. Mammalian type. 



cortical connections of mammals, though the facts 

 necessary for such an analysis are available, as we 

 shall see. 



It is clear from the preceding discussion that the 



