xvi CHBONOLOGY 



1846 



Visited England for fourth time. 

 September. Sailed for America. 

 December. Gave his first lectures in 

 Boston for the Lowell Institute. 



1847 



Published (in Europe) Glacial System 

 (in French). 



1848 



Eevolution in !N"euch&tel. 

 Foundation of Lawrence Scientific School 

 of Harvard University. 

 Accepted professorship at Harvard. 

 Published Principles of Zoology (with 

 Dr. A. A. Gould). 

 Expedition to Lake Superior. 

 His wife died in Carlsruhe. 



1850 



Married Elizabeth Cabot Gary. 

 Sent by Coast Survey to study Florida 

 reefs. 



Became Professor at the Charleston 

 (S.C.) Medical College. 



