384 RECENT PUBLICATIONS 
—Irvinc, J. D., AND BANncrort, H. Geology and Ore Deposits near Lake 
City, Colorado. [U.S. Geological Survey Bulletin 478. Washington, 
ToIt.| 
—Jamison, C. E. Mineral Resources of Wyoming. Mining Laws of the 
State and of the United States. [Bulletin 1, Series B. Cheyenne, 1o11.] 
—Jounson, J. P. The Pre-Historic Period in South Africa. [New York: 
Longmans, Green & Co., roto.] 
—Kraus, E. A New Jolly Balance. [American Journal of Science, Vol. 
XXXI, June, ro1t.] 
—Lamp, W. A., FREEMAN, W. B., aNnD HENSHAW, F. F. Surface Water 
Supply of the United States, 1909. Part. VI. Missouri River Basin. 
Prepared under the Direction of M. O. Leighton. [U.S. Geological 
Survey Water-Supply Paper 266. Washington, rort.| 
—LamseE, L. M. On Arctotherium from the Pleistocene of Yukon. [From 
the Ottawa Naturalist, Vol. XXV, No. 2, May, 1911. Ottawa.] 
—LanpbEs, Henry. The Road Materials of Washington. [Bulletin No. 2, 
Washington Geological Survey. Olympia, rort.| 
—Laney, F. B. The Relation of Bornite and Chalcocite in the Copper Ores 
of the Virginia District of North Carolina and Virginia. [No. 1835, from 
the Proceedings of the United States National Museum, Vol. XL, pp. 
513-24, with Plates 63-69. Published May 31, 1911. Washington.] 
—LAUTENSACH, HERMANN. Die Alpen im Eiszeitalter von A. Penck und 
Ed. Briickner. [Sonderabdruck aus der Zeitschrift fiir Gletscherkunde. 
Band IV, 1too9. Berlin: Verlag von Gebriider Borntraeger.] 
. —Lincpren, W. The Tertiary Gravels of the Sierra Nevada of California. 
[U.S. Geological Survey Professional Paper 73. Washington, 1911.] 
—LOEFGREN, ALBERTO. Notas Botanicas (Ceara). [Publicacao n. 2. Serie 
I, A—Investigacoes Botanicas. Ministerio da Viacao e Obras Publicas. 
Inspectoria de Obras Contra As Seccas. Rio de Janeiro, ror1o.] 
—MarsHALt, R. B. Results of Spirit Leveling in California, 1907 to 1910, 
Inclusive. (Work in Sacramento, Salinas, and San Joaquin Valleys 
Done in Co-operation with the State.) [U.S. Geological Survey Bulle- 
tin 481. Washington, rort.| 
Results of Spirit Leveling in Idaho, 1896 to 1909, Inclusive. [U.S. 
Geological Survey Bulletin 487. Washington, rort.] 
Results of Spirit Leveling in Iowa. [U.S. Geological Survey Bulletin 
No. 460. Washington, rort.| 
Results of Spirit Leveling in Michigan and Wisconsin, 1897 to 1909, 
Inclusive. [U.S. Geological Survey Bulletin 461. Washington, 1ort.| 
Results of Spirit Leveling in Nevada, 1897 to 1900, Inclusive. [U.S. 
Geological Survey Bulletin 488. Washington, rortr.] 
Results of Spirit Leveling in Texas, 1896 to 1910, Inclusive. [U.S. 
Geological Survey Bulletin 468. Washington, rort.] 
Results of Spirit Leveling in Utah, 1897 to ro1o, Inclusive. [U.S. 
Geological Survey Bulletin 489. Washington, rort.] 
