110 STUDIES FOR STUDENTS 
G. K. Gilbert, ““ The Colorado Plateaux Province asa Field for Geological 
Study,” Amer. Jour. Sct., XII, 1876, 16-24, 85-103. 
—— “ Report on the Geology of the Henry Mountains,” Deft. of Interior, U. 
S. Geogr. and Geol. Survey, Rocky Mountain Region, 1877. 
—— “The Underground Water of the Arkansas Valley in Eastern Colorado,” 
Seventeenth Ann. Rep. U.S. Geol. Survey, Pt. II, 1896, 551-601. 
G. Greenwood, Rain and Rivers. London: Longmans, 1857. 
C. W. Hayes, ‘‘ Physiography of the Chattanooga District in Tennessee, 
Georgia, and Alabama,” (Vimeteenth Ann. Rep. U.S. Geol. Survey, 1899, 
Pt. II, 1-58. 
R. T. Hill, ‘‘ The Geological History of the Isthmus of Panama and Portions 
of Costa Rica,” Bull. Museum Comp. Zool, Harvard College, XXVIII, 
1898, 151-285. 
W. H. Hobbs, ‘‘ The Newark System of Pomperaug Valley, Connecticut,” 
Twenty jirst Ann. Rep. U. S. Geol, Survey, Pt. II], 1901, 7-162. 
T. McK. Hughes, “Ingleborough, Pt.I, Physical Geography,” Proc. Vork- 
shire Geol. and Polytech. Soc., X1V, 1g01, 125-150. 
W. D. Johnson, ‘‘The High Plains and their Utilization,’ Twenty-first Ann. 
kep. U.S. Geol. Survey, toot, Pt. IV, 601-741. 
A. Keith, “Geology of the Catoctin Belt,” Fourteenth Ann. Rep. U. S. Geol. 
Survey, Pt. II, 1894, 285-395. 
H. B. Kiimmel, “Some Rivers of Connecticut,” Jour. GEOL., I, 1893, 371- 
393- 
A. C. Lawson, ‘‘ The Gcamorploseny of the Coast of Northern California,” 
Bull. Dept. Geol. Univ. Cala., 1, 1894, 241-271. 
W J McGee, ‘‘ The Geology of the Head of Chesapeake Bay,” Seventh Ann. 
_kep. U.S. Geol. Survey, 1888, 537-646. 
~— “The Pleistocene History of Northeastern Re Eleventh Ann. Rep. 
U.S. Geol. Survey, 1891, 189-577. 
J. E. Marr, The Scientific Study of Scenery. London: Methuen, Igoo. 
H.R. Mill, The International Geography. London: Newnes, 1899. 
R. D. Oldham, ‘On the law that governs the action of flowing streams.” 
Quart. Jour.. Geol. Soc., XLIV, 1888, 733-738. brea 
A. Phillipson, “Ein Beitrag zur Erosionstheorie.” Petermann’s Mitt., XXXII, 
1866, 67—79. 
J. W. Powell, Exploration of the Colorado River of the West and Its Tribu- 
tartes. Washington, 1875. 
—— ‘Physiographic Processes’’: ‘Physiographic Features,” Vat. Geogr. 
Monogr,, 1895,-1-32, 33-64. New York: American Book Co. 
W.N. Rice, editor of Revised Text-Book of Geology, by James D. Dana. 
New York: American Book Co., 1897. 
I. C. Russell, Rzvers of North America. New York: Putnam, 1898. 
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