xii AUDUBON THE NATURALIST 



H. Wetherill, of Philadelphia. For the use of new photo- 

 graphic and other illustrative material, I am further indebted 

 to Mr. Stanley Clisby Arthur, of the Conservation Commis- 

 sion of Louisiana, and to Cassinia, the medium of publication 

 of the Delaware Valley Ornithological Club. 



Through the kindness of Messrs. Charles Scribner's Sons 

 I have been permitted to draw rather freely from Audubon 

 and His Journals, by Miss Maria R. Audubon and Elliott 

 Coues, and to reproduce three portraits therefrom ; original 

 photographs of two of these have been kindly supplied by Dr. 

 R. W. Shufeldt. I also owe to the courtesy of the Girard 

 Trust Company, of Philadelphia, the privilege of quoting cer- 

 tain letters contained in William Healey Dall's Spencer Ful- 

 lerton Baird. 



To my esteemed colleague, Professor Benjamin P. Bour- 

 land, I am under particular obligations for his invahiable aipl 

 in revising translations from the French and in the translitera- 

 tion of manuscripts, as well as for his kindly assistance in 

 correspondence on related subjects. I have derived much 

 benefit also from my sister, Miss Elizabeth A. Herrick, who 

 has made many valuable suggestions. To all others who have 

 aided me by will or deed in the course of this work I wish to 

 express my cordial thanks. 



FRANCIS H. HEEEICK. 

 Western Reserve University^ 



Cleveland. 

 July 2, 1917. 



