MOHAWK LAKE BEDS. 
409 
X. LE Conte, Joseph. “On some Ancient Glaciers of the Sierra 
Nevada.” Am. Jour. Sci., Third Series, vol. X, 1875, pp. 
126-139. 
XI. LE Conte, Joseph. “On the Structure and Origin of Mount¬ 
ains with special reference to recent objections to the Con- 
tractional Theory.” Am. Jour. Sci., Third Series, vol. XVI, 
1878, pp. 95-112. 
XII. LeConTE, Joseph-. “Old River Beds of California.” Am. 
Jour. Sci., Third Series, vol. XIX, 1880, pp. 176-190. 
XIII. Le Conte, Joseph. “A Post-Tertiary Elevation of the Sierra 
Nevada shown by the River Beds.” Am. Jour. Sci., Third 
Series, vol. XXXII, 1886, pp. 167-181. 
XIV. Le Conte, Joseph. “On the Origin of Normal Faults, and on 
the Structure of the Basin Region.” Am. Jour. Sci., Third 
Series, vol. XXXVIII, 1889, pp. 257-263. 
XV. MERRILL, G. P. “On Deposits of Volcanic Dust and Sand in 
Southwestern Nebraska.” Proc. U. S. Nat. Museum, 1885, 
pp. 99-100. 
XVI. RUSSELL, I. C. “Quaternary History of Mono Valley, Cali¬ 
fornia.” Eighth Ann. Rep. Director U. S. Geol. Survey, 
Part I, pp. 269-394, illustrated with maps and photo-engrav¬ 
ings. 
XVII. Whitney, J. D. “ The Auriferous Gravels of the Sierra Nevada 
of California.” Memoirs of the Museum Comp. Zool., vol. 
VI, No. 1, 1880. 
XVIII. Whitney, J. D. “The Climatic Changes of Later Geological 
Times.” Memoirs Museum Comp. Zool., vol. VII, No. 2, 
Part II, 1882. 
XIX. LE Conte, Joseph. “On the Structure and Origin of Moun¬ 
tains.” Amer. Jour. Sci., Third Series, vol. XVI, 1878, pp. 
IOO-IOI. 
52—Bull. Phil. Soc., Wash., Vol. 11. 
