X. 



BUSINESS and pleasure alike sent Ag- 

 assiz to travel over all the eastern half 

 of the United States. To all the princi- 

 pal cities he went as a lecturer. Early 

 in his stay he led a scientific expedition 

 to Lake Superior. In 1853 he passed 

 up the Mississippi from the Gulf to St. 

 Louis. For some years Charleston was 

 familiar to him, from his holding a 

 second professorship there in the Medi- 

 cal School. He knew well all the New 

 England states ; and, if all the gigantic 

 boulders to which the country folk have 

 given his name were gazetted, his paths 

 would stand recorded almost as well as 

 the course of one of his own glaciers. 

 The steamers of the Coast Survey carried 

 him from the coral reefs of Florida to the 

 ice-scored coasts of Maine. But, in spite, 

 of his additional professorship at Charles- 

 ton (later also at Cornell) and his in- 

 numerable engagements to lecture, he 



