APPENDIX 569 



'83 On the Trituberciilate Type of ^folar Tooth in the ^Mammalia. 



Proc. Amer. Philos. Soc, Vol. XXI, Dec. 7, 1883, pp. 324-o2(). 

 '85 The White River Beds of Swift Current River, North West Terri- 

 tory. 



Amer. Natural, Vol. XIX, 1885, p. 163. 

 '87 Origin of the Fittest. Essays on Evolution. Svo, New York, 1887. 

 '87 The Perissodactyla. 



Amer. Natural., Vol. XXI, 1887, pp. 985-1007 ; 1060-1076. 

 '88 The Artiodactyla. 



Amer. Natural, Vol. XXII, 1888, pp. 1079-1095. 

 '89 The Vertebrate Fauna of the Equus Beds. 



Amer. Natural, Vol. XXIII, 1889, pp. 160-165. 

 '89 The Proboscidea. 



Amer. Natural, Vol. XXIII, No. 268, April, 1889, pp. 191-211. 

 '89 The Silver Lake of Oregon and its Region. 



Amer. Natural, Vol. XXIII, 1889, pp. 970-982. 

 '91 On Vertebrata from the Tertiary and Cretaceous Rocks of the 



Northwest Territory. 



Geol Surv. Canada, Contrib. to Canad. Pakeont., Vol. Ill, Montreal, 



1891, pp. 1-25. 

 '92 A Preliminary Report on the Vertebrate Paleontology of the Llano 



Estacado. 



Geol Surv. Texas, 4th Ann. Rept., 1892 (1893), pp. 1-136. 

 '95 The Antiqiaity of jNIan in North America. 



Amer. Natural, Vol. XXIX, June, 1895, pp. 593-599. 



Cope, E. D., and Wortman, J. L. 



'84 An Account of the Mammalian Fauna of the Post-Pliocene Deposits 

 of Indiana. 



State Geol Indiana, 14th Rept., Pt. 2, 1884. 

 Croll, J. 



'75 Climate and Time in their Geological Relations. A Theory of 



Secular Changes of the Earth's Climate. 8vo, London, 1875. 

 '85 On Arctic Interglacial Periods. 



Philos. Mag., Ser. 5, Vol. XIX, 1885. 



Cummins, W. F. 

 '91-'92 Notes on the Geology of Northwest Texas. 



Geol Surv. Texas, 3d Ann. Rept., 1891 (1892), pp. 129-200 ; 4th 



Ann. Rept., 1892 (1893), pp. 179-238. 

 Cuvier, G. 



'26 Discours sur les Revolutions do la Surface du Globe, et sur les 



Changemens qu'elles out Produits dans le Regne Animal. Paris 



and Amsterdam, 1826. 



Cuvier, G., and Brongniart. A. 



'21 Description Creologique des Environs de Paris. Paris, 1821. 



