CHAPTER XXIII. 



LETTERS FROM LYELL, MURCHISON, OWEN, DAUBENY, 

 HERSCHEL, ETC. 



Lyell on Professor Silliman's Lectures; on his own Geology; on Professor 

 Silliman's Influence; on Revisiting America; onMantell. Lady Lyell 

 on Professor Silliman's Travels ; on the Marriage of her Sister. Mur- 

 chison on the Geology of Russia and of America; on Dana's Work on 

 Corals; on Colonel Fremont. Owen on the Footprints of the Con- 

 necticut Valley ; on his own Labors in Anatomy. Daubeny on hia 

 own Journal in the United States; on Liebig; on the Revolution in 

 France (1848); on the Relations of England and America; on Educa- 

 tion at Oxford. Sir J. F. W. Herschel on the late Mr. E. P. Mason. 

 Letter from Professor Haidinger. Letter from Professor Coney- 

 beare. Letter from Professor J. F. W. Johnston on Russia. Letter 

 from Professor W. B. Rogers. 



A FEW of the numerous letters which Professor 

 Silliman received from Sir Charles Lyell are here 

 given. Professor Silliman's correspondence with 

 eminent men of science is full of proofs of his un- 

 selfish zeal in forwarding their interests, at the same 

 time that he was promoting the diffusion of useful 

 knowledge. 



FROM MR. (NOW SIR CHARLES) LYELL. 



DEAR SIR, If I had not made, as you will see by the 

 Preface, a great many alterations in my new edition which 

 I consider important, I should not venture to obtrude four 

 volumes more upon your shelves ; but, as you were so good 

 as to state, in your last letter to me, that you had made use 



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