\S30 



TO 



BENJAMIN SILLIMAN, Esq. LL.D. M.D. 



PROFESSOR OF CHEMISTRY AND GEOLOGY IN YALE COLLEGE, 



NEWHAVEN, CONNECTICUT J 



FOUNDER AND EDITOR OF THE AMERICAN JOURNAL OF SCIENCE; 



FOREIGN MEMBER OF THE GEOLOGICAL SOCIETY OF LONDON; 



ETC. ETC. 



My very dear Friend, 



It is with the liveliest pleasure that I inscribe 

 anew "The Wonders of Geology" with your 

 distinguished name : for although we have never 

 met — and probably never shall meet in this world 

 — a friendship originating in mutual respect and 

 regard, and cemented by an unrestricted corre- 

 spondence, and an unreserved interchange of 

 thought and feeling, for nearly twenty years, 

 needs not the aid of personal intercourse to 

 increase its ardour, or ensure its permanence. 

 a 2 



