NATURAL HISTORY MUSEUMS 157 



natural resources and raw products of all countries. It lias 

 thousands of correspondents in commercial centers of the world, 

 and at frequent intervals sends members of its staff to the four 

 quarters of the globe. This information thus secured is placed 

 at the disposal of American business men, and the activity of 

 the museum in this direction is a principal and very potent 

 factor in the promotion of American trade abroad. 



Swarthmore college museum, Swarthmore. Spencer Trotter of 

 the department of biology in charge. 



Mineralogy and geology. The Joseph Leidy collection of exceed- 

 ingly choice cabinet specimens of crystallized minerals, charac- 

 teristic rocks and ores, and transparent and opaque models of 

 the various systems of crystallizations; the Robert R. Corson 

 collection of stalactites, stalagmites and helictites, illustrating 

 the limestone formations of the Luray caverns, the second in 

 magnificence in the world; an educational series of rocks from 

 the United States geological survey. 



Zoology. The Wilcox and Farnum collection of mounted birds, 

 including nearly all the species which inhabit, or visit, the state; 

 a collection of several hundred bird skins for study and refer- 

 ence; a large series of partial and complete skeletons prepared 

 at Ward's natural science establishment illustrating compara- 

 tive osteology and the structure and framework of backboned 

 animals; the 0. F. Parker collection of choice typical land, fresh- 

 water and marine shells; a large and constantly increasing col- 

 lection of stuffed and alcoholic examples of vertebrates and in- 

 vertebrates (including the United States fish commission educa- 

 tional collection); of dissected specimens for demonstration in 

 lectures; glass and papier-mache models of invertebrates, and of 

 special points in morphology. 



Botany. 2000 specimens: the Eckfeldt herbarium illustrative 

 of the flora of Pennsylvania. 



Ethnology. The Frederick Kohl ethnologic collection, contain- 

 ing Indian implements, weapons, clothing, etc., mostly from 

 Alaska; the North Greenland collection, deposited by Samuel J. 

 Entrikin of the Peary expedition. 



The collections of the college are strictly for use in teaching, 

 the specimens being in constant use in the lectures and in the 



