F. Augustus Schermerhorn, Mr. William
C. Schermerhorn, Mr. Charles Stewart Smith, Mr. James Speyer,
Mr. George W. Vanderbilt, Mr. William C. Whitney, of New York;
to Mr. Frederick L. Ames, Mrs. John L. Gardner, Mrs. E. Mason,
Mr. Nathaniel Thayer, Mr. Samuel D. Warren, Dr. Charles G. Weld,
of Boston; to Mr. Allison D. Armour and Mr. Franklin MacVeagh, of
Chicago; to Mrs. Phoebe Hearst, Mr. Frank G. New. lands, Mrs. Abby
M. Parrot, Mr. F. W. Sharon, of San Francisco; to Mr. Adolphus Busch,
of St. Louis; to Mr. Theo. W. Davis, of Newport; and to the late
Mr. E. L. Godkin.

Much valuable support or assistance I have also received from
Mrs. Morris K. Jesup; Mrs. Elizabeth Hobson, of Washington, D. C.;
Miss Joanna Rotch, of Milton, Mass.; Mrs. Henry Draper, of New York;
Mrs. Robert W. Chapin, of Lenox; the late Mr. E. L. Godkin; Professor
Alexander Agassiz; Professor F. W. Putnam, Curator of the American
Museum of Natural History in New York; Dr. S. Weir Mitchell, of
Philadelphia; Professor Franz Boas, Curator of the American Museum of
Natural History in New York; Dr. B. L. Robinson and Dr. M. L. Fernald,
of Harvard University; Professor J. A. Allen and Mr. L. P. Gratacap,
Curators of the American Museum of Natural History.

I am under obligation to Mr. Marshall H. Saville, Curator of the
American Museum of Natural History, especially for the placing of
the names of the ruins of Southern Mexico on one of the maps; to
Miss Alice Fletcher, of Washington, D. C., and Mr. Edwin S. Tracy for
transcribing from the graphophone three of the songs rendered in this
book, and to Mrs. George S. Bixby for aid in transcribing the native
music. Finally I desire to express my appreciation of the untiring
services of my private secretary, Mrs. H. E. Hepner.

The upper illustration on page 65 is a reproduction of a photograph
kindly furnished me by Mr. Frank H. Chapman, and the illustration in
Vol. I., pages 145-146, is made from a photograph acquired through
the late Dr. P. Lamborn. The illustration in Vol. II., pages 464-465,
I owe to the courtesy of Mr. D. Gabriel Castanos, of Guadalajara.

The coloured illustrations are represented as the objects appear when
the colours have been brought out by the application of water.

The maps do not lay claim to an accuracy which, under the
circumstances, it was impossible to obtain, but they will, I hope,
be found to be an improvement on the existing ones.

Dr. Ales Hrdlicka, who has just ret