EXTINCT AND EXISTING GLACISES OF COLORADO 75 



Reid, Harry Fielding, "The Variation of Glaciers," VI, Journ. GeoL, Vol. IX, 

 pp. 250-54, 1901; VIII, ibid., Vol. XI, pp. 285-88, 1903; IX, ibid., Vol. XII, 

 pp. 252-63, 1904; X, ihid., Vol. XIII, pp. 313-18, 1905; XI, ibid., Vol. XIV, 

 pp. 402-10, 1906; XII, ibid.. Vol. XVI, pp. 46-5S, 1908; XIII, ibid., Vol. 

 XVI, pp. 664-68, 1908; XIV, ibid., Vol. XVII, pp. 667-71, 1909. [These 

 papers contain brief statements concerning Arapahoe and Hallett 

 Glaciers.] 



, "The Flow of Glaciers and Their Stratification," Appalachia, Vol. XI, 



pp. 1-6, 1905. 



Russell, Israel C, "Existing Glaciers of the United States," Fifth Ann. Kept. 

 U.S. Geol. Surv., for 1883-1884, pp. 303-5S, 1885. 



, Geological History of Lake Lahontan, a Quaternary Lake of Northwestern 



Nevada, U.S. Geol. Surv., Mon., Vol. XI, 1885. 



, "Glaciers of Mount Ra.mieT," Eighteenth Ann. Rept. U.S. Geol. Surv., 



for 1896-97, Part II, pp. 349-415, 1898. 



, Glaciers of North America, Ginn & Co., 1901. 



Salisbury, Rollin D., "Glacial Work in the Western Mountains in 1901," 



Journ. Geol., Vol. IX, pp. 718-31, 1901. 

 , "Glacial Geology," Geology of the Big Horn Mountains, U.S. Geol. Surv., 



Prof. Paper, No. 51, pp. 71-90, 1906. 



See also under Chamberlin and Salisbury. 



Schoeberle, J. M., "An Ignored Theory of the Ice Age," Science, N.S., Vol. 

 XXIV, pp. 439-40, 1906. 



Sherzer, William Hittell, "Glacial Studies in the Canadian Rockies and 

 Selkirks," Smithsonian Misc. Coll., Pub. No. 1567, Vol. XLVII, pp. 4S3-96, 

 1905; "Glaciers of the Canadian Rockies and SeMrks," Smithsonian Contrib. 

 to Knowl., Pub. No. 1692, Vol. XXXIV, pp. 1-135, 1907- [Discusses strati- 

 fication, dirt-bands, etc.] 



Siebenthal, C. E., "Notes on Glaciation in the Sangre de Cristo Range, Colo- 

 rado," Journ. Geol., Vol. XV, pp. 15-22, 1907. 



, "The San Luis VaUey, Colorado," Science, N.S., Vol. XXXI, pp. 744-46, 



1910. 



, Geology and Water Resources of the San Luis Valley, Colorado, U.S. Geol. 



Serv., Water-Supply Paper No. 240, 1910. 

 Spencer, Arthur Coe, "Erosion of the Rico Dome and Recent Geologic History," 



Twenty-first Ann. Rept. U.S. Geol. Surv., for 1899-1900, Part II, pp. 152-65, 



1900. 



, See also under Cross and Spencer. 



Stevenson, John J., "Geology of a Portion of Colorado Explored and Surveyed 



in 1873," U.S. Geog. Explor. and Surv. W. of looth Meridian (Wheeler Survey), 



Vol. Ill, 1875. [Especially pp. 426-71.] 



