HISTORY OF THE MUSEUM 



COLLECTIONS 



The collections in this department are mainly from three sources, 

 namely, Expeditions, Exchange, Purchase. 



First, and most important, are the collections brought in year by 

 year by expeditions sent out by the Museum to explore various fossil- 

 bearing horizons in the United States and other parts of the world. 

 Fifty-two expeditions have been sent out in this department between 

 the years 1891 and 1909 inclusive, at a total cost of upward of $1 10,000. 

 The expense of these expeditions is borne partly by the General 

 Collections Endowment Fund provided by the Trustees, partly by the special 

 Ex editions annua l ^ un< ^ °f S2,000 provided by Professor Henry Fairfield Osborn, 

 and in some instances by funds for special explorations which have 

 been provided by the late President Jesup, by Mrs. Jesup, by the 

 late William C. Whitney, by Messrs. Percy R. Pyne, J. P. Morgan, Jr., 

 Frank K. Sturgis, Henry Fairfield Osborn, and George J. Gould. More 

 than half of the collections, both in number and value, have been 

 obtained through Museum expeditions. 



Field Explorations. — Beginning in 1891, the various geological 

 horizons and countries have been explored in the following seasons : 



Permian, Texas, 1902, 1906, 1908. 

 Triassic, North Carolina, 1894, 1895. 

 Upper Jurassic, Wyoming, 1897-1905; Montana, 1903. 

 Marine Cretaceous, Kansas, 1897; S. Dakota, 1903. 

 "Laramie" Cretaceous, Wyoming, 1892, 1900; Montana, 1902-9. 

 Judith River Cretaceous, Montana. 



Paleocene (Puerco and Torrejon), New Mexico, 1892, 1896. 

 Lower Eocene (Wasatch), Wyoming, 1891,1896; New Mexico, 1896. 

 Lower Eocene (Wind River), Wyoming, 1891, 1896, 1905, 1909. 

 Eocene (Huerfano), Colorado, 1897. 

 Middle Eocene (Bridger), Wyoming, 1893, 1903-6, 1909. 

 Middle Eocene (Washakie), Wyoming, 1893, 1895, 1908. 

 Upper Eocene (Uinta), Utah, 1894, 1895; Wyoming, 1909. 

 Oligocene (Fayum), Egypt, 1907-09. 



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