SOUTH DAKOTA SCHOOL OF MINES 173 



Osborn, H. F. Observations on the Skeletons of 

 Moropus Cooki in the American Museum. Geol. Soc. Am. 

 Bull., vol. 29, pp. 131-133, 1918. 



Osborn, H. F. Equidae of the Oligocene, Miocene and 

 Pliocene of North America, Iconographic Type Eevision. 

 Am. Mus. Nat. Hist., Mem., vol. 2, pt. 1 (new series), 217 

 pp., 173 figs., 54 pis., 1918. 



Geologic Atlas Folios: 



Darton, N. H. Oelrichs Folio, No. 85, 1902. 



Darton N. H. and Smith, U. S. T. Edgemont Folio, 

 No. 107, 1904. 



Darton, N. H. Sundance Folio, No. 127, 1905. 



Darton, N. H. and O'Harra, C. C. Aladdin Folio, No. 

 128, 1905. 



Darton, N. H. and O'Harra, C. C. Devils Tower Folio, 

 No. 150, 1907. 



Darton, N. H. and O'Harra, C. C. Belle Fourche 

 Folio, No. 164, 1909. 



Books. (Latest Editions.) 



Scotts Introduction to Geology. 



Chamberlain and Salisbury's Geology. (College Edi- 

 tion, one vol. or vol. 3 of the larger work.) 



Le Conte's Elements of Geology. 



Pirsson and Schuchert's Textbook of Geology. 



Woodward's Outline of Vertebrate Paleontology. 



Beddard's Mammalia. 



Palmer, T. S. Index Generum Mammalium; a list of 

 the Genera and Families of Mammals. U. S. Dept. of Agr., 

 Biolog. Surv., 1904. 



Osborn, H. F. Evolution of Mammalian Molar Teeth. 



Bibliographies. 



U. S. Geol. Surv. Bull. 127. (1732-1891). 

 IT. S. Geol. Surv. Bull. 188-189 (1892-1900). 

 U. S. Geol. Suv. Bull. 301 (1901-1905). 



