ARCHITECTURE AT MATURITY. 19 1 



TABLE 46. SHOWING THE CHANGE WITH AGE IN THE PRO- 

 PORTIONAL WEIGHT OF THE SPINAL CORD AS COMPARED 

 WITH THE ENCEPHALON IN A SERIES OF MAMMALS. (Com- 

 piled from Mies.} 



In several small birds, as the starling and siskin, the 

 relation between the encephalon and the cord is as 

 lo-i ; while in some fishes and most of the amphibia 

 the spinal cord is heavier than the brain. 1 



1 Mies, Neurolg. CentralbL; \^-$. 



