PREFACE 



drawn upon the pages of Professor Joseph Le Conte, of 

 the University of California, and of Professor Henry S. 

 Williams, now Silliman Professor of Natural History in 

 Yale University, whose memorial discourses glow with 

 friendship. The memorial discourse of Professor Dwight 

 has also been suggestive. Professor George P. Fisher has 

 been kind enough to read the chapter on the Relation of 

 Science and Religion, and to give me some suggestions. 



To all who have favored me with correspondence, I 

 return my acknowledgments; to the librarians of Yale 

 University, the Lenox Library, and of the Peabody In- 

 stitute in Baltimore, and especially to the widows of 

 Professors Agassiz, Gray, and Guyot. In England, like 

 favors were shown by Professor Darwin, Sir Archibald 

 Geikie, and Professor Judd. To various officers of the 

 United States Navy, especially Admiral Crowninshield 

 and Captain Craig of the Hydrographic Office, I am also 

 indebted for information with respect to the naval ex- 

 pedition which had a life-long influence upon the studies 



of Professor Dana. 



D. C. GILMAN. 



xn 



