LIFE OF JAMES DWIGHT DANA 



resources and their relations to the living species inhabit- 

 ing them ; brings in enough of geology to show how the 

 existing characteristics have come out of the past, and to 

 illustrate the general laws of progress ; and then explains 

 the relations of the continents and their different countries 

 to man's history, in a general survey of the progress of 

 civilization. The student gathers new ideas from every 

 page, and before he has closed the work has learned, as 

 never before, to appreciate the exalted position of 

 America in the ' Geographical March of Humanity 

 through the Ages.' No one, young or old, can read it 

 without great benefit to his moral as well as his intel- 

 lectual nature." 



DANA TO GUYOT 



"NEW HAVEN, Jan. 30, 1851. 



" I was much gratified by your kind letter of the 2/th 

 inst. Your visit here gave us so much pleasure that we 

 shall always esteem it a kindness to us whenever you can 

 come again to our house and home. I am much obliged 

 by your sending a copy of the Zoophytes to Professor 

 Pictet, and gratified that the chapters you referred to 

 were found of interest. The Geology has not yet been 

 noticed here or abroad, and nothing would please me 

 more than your review of any part of it. 



' We have been expecting that Professor Silliman, Jr., 

 would draw up for the Journal an article on the Mam- 

 moth Cave ; and but just a few days since we learned that 

 he would not find time for it. We should therefore be 

 glad to have the letter to you for the Journal of Science. 

 I doubt not that he would be glad to have it appear in 

 the Bibliotheque Universelle, and would feel greatly in- 

 debted to you for communicating it to that journal. Our 

 March number is so far advanced that we shall not require 

 it for printing under three weeks, when we shall begin 

 with the May number. 



" I have recently endeavored to explain your views 

 upon the harmony of Science and the Mosaic account of 

 the Creation, before a few gentlemen, but wished much 

 that you were here to do the subject justice. Professor 

 Mitchell has also been lecturing on this point, and takes 

 the same basis for his explanations the nebular theory. 



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