the most memorable of our lives and we wish to express our deepest
gratitude to the Trustees of the American Museum of Natural History, and
especially to President Henry Fairfield Osborn, whose enthusiastic
endorsement and loyal support made the Expedition possible. Director F.A.
Lucas, Dr. J.A. Allen and Mr. George H. Sherwood were unfailing in
furthering our interests, and to them we extend our hearty thanks.

To the following patrons, who by their generous contributions materially
assisted in the financing of the Expedition, we wish to acknowledge our
great personal indebtedness as well as that of the Museum; Mr. and Mrs.
Charles L. Bernheimer, Mr. and Mrs. Sidney M. Colgate, Messrs. George
Bowdoin, Lincoln Ellsworth, James B. Ford, Henry C. Frick, Childs Frick,
and Mrs. Adrian Hoffman Joline.

The Expedition received many courtesies while in the field from the
following gentlemen, without whose coöperation it would have been
impossible to have carried on the work successfully. Their services have
been referred to individually in subsequent parts of the book: The Director
of the Bureau of Foreign Affairs of the Province of Yün-nan; M. Georges
Chemin Dupontès, Director de l'Exploration de la Compagnie Française des
Chemins de Fer de l'Indochine et du Yün-nan, Hanoi, Tonking; M. Henry
Wilden, Consul de France, Shanghai; M. Kraemer, Consul de France, Hongkong;
Mr. Howard Page, Standard Oil Co., Yün-nan Fu; the Hon. Paul Reinsch,
Minister Plenipotentiary and Envoy Extraordinary to the Chinese Republic,
Mr. J.V.A. McMurray, First Secretary of the American Legation, Peking; Mr.
H.G. Evans, British-American Tobacco Co., Hongkong; the Rev. William Hanna,
Ta-li Fu; the Rev. A. Kok, Li-chang Fu; Ralph Grierson, Esq., Teng-yueh;
Herbert Goffe, Esq., H.B.M. Consul General, Yün-nan Fu; Messrs. C.R.
Kellogg, and H.W. Livingstone, Foochow, China; the General Passenger Agent,
Canadian Pacific Railroad Company, Hongkong; and the Rev. H.R. Caldwell,