PREFACE ix 



I wish to acknowledge the kindness of the Editors of Har- 

 per's Magazine, Natural History, Asia Magazine and the 

 Trans-Pacific Magazine in whose publications parts of this 

 book have already appeared. 



We are indebted to a host of friends who gave assistance 

 to the expedition and to us personally in the field: 



The Wai Chiao Pu (Ministry of Foreign Affairs) freely 

 granted permits for the expedition to travel throughout China 

 and extended other courtesies for which I wish to express ap- 

 preciation on behalf of the President and Board of Trustees 

 of the American Museum of Natural History. 



In Peking, His Excellency Paul S. Reinsch, formerly Ameri- 

 can Minister to China, Dr. C. D. Tenney, Mr. Willys Peck, 

 Mr. Ernest B. Price and other members of the Legation staff 

 obtained import permits and attended to many details con- 

 nected with the Chinese Government. 



Mr. A. M. Guptil acted as our Peking representative while 

 we were in the field and assumed much annoying detail in for- 

 warding and receiving shipments of supplies and equipment. 

 Other gentlemen in Peking who rendered us courtesies in va- 

 rious ways are Commanders I. V. Gillis and C. T. Hutchins, 

 Dr. George D. Wilder, Dr. J. G. Anderson and Messrs. H. C. 

 Faxon, E. G. Smith, C. R. Bennett, M. E. Weatherall and J. 

 Kenrick. 



In Kalgan, Mr. Charles L. Coltman arranged for the trans- 

 portation of the expedition to Mongolia and not only gratu- 

 itously acted as our agent but was always ready to devote his 

 own time and the use of his motor cars to further the work 

 of the party. 



In Urga, Mr. F. A. Larsen of Anderson, Meyer & Company, 

 was of invaluable assistance in obtaining horses, carts and 

 other equipment for the expedition as well as in giving us the 

 benefit of his long and unique experience in Mongolia. 



Mr. E. V. Olufsen of Anderson, Meyer & Company, put him- 



