172 EMINENT NATURALISTS. 



years afterwards lie spent upwards of twelve months 

 in the United States of America, Canada, and Nova 

 Scotia. This last journey, together with a second 

 one to America in 1845, when he visited Boston, Phila- 

 delphia, New Orleans, and the alluvial plains of the 

 Mississippi, gave rise, not only to numerous original 

 papers, but also to the publication of two works not 

 exclusively geological, " Travels in North America ' 

 (1845), and "A Second Visit to the United States" 

 (1849). 



Concerning the first of these two works, a writer in 

 the "Edinburgh Review ,: says: — "These volumes 

 exhibit in a narrow compass more of the bright side 

 of the American character and institutions than we 

 have discovered in the panegyrics of the most ardent 

 democrats who have visited the land of liberty. This 

 effect is produced not only by the hopeful, good- 

 humoured, and unaffected tone in which the excellent 

 writer relates his adventures ; the occurrences themselv. is 

 tell their own favourable story." 



Referring to the same work, the " North American 

 Review," the critical authority of the United States, 

 says : — " Although only a small part of these volumes 

 is made up from the materials of an ordinary book of 

 travels, yet as such it is none the worse because the 

 author came to inspect American rocks rather than 

 American manners. The remarks he does offer are so 

 sensible and discriminating, so evidently thrown out by 

 one who possesses that rare knowledge — how to observe, 

 and who thinks for himself, that we only regret they 

 are so few and cursory, and are a little provoked when 



