THE AMERICAN JOURNAL OF SCIENCE 



Established by BENJAMIN SILLIMAN in 1818 



The Leading Scientific Journal in the United States 

 to the Physical and Natural Sciences, with special reference to Physics 

 nistry on the one hand, and to Geology and Mineralogy on the other. 



THE AMERICAN JOURNAL OF SCIENCE 



NEW HAVEN, CONN. 



THE JOURNAL OF 



Comparative Neurology 



