576 RECENT PUBLICATIONS 
—Watson, THOMAS L., AND HEss, FRANK L. Zirconiferous Sandstone near 
Ashland, Virginia, with a Summary of the Properties, Occurrence, and 
Uses of Zircon in General. [Bulletin Philosophical Society, Scientific 
Series, Vol. I, No. 11. University of Virginia. Charlottesville, Va., 
July, to912.] 
Zirconiferous Sandstone near Ashland, Virginia. U.S. Geological 
Survey Bulletin 530-P. Advance chapter from Contributions to Econom- 
ical Geology, 1911, Part 1. Washington, 1912.] 
—WEAVER, C. E. Geology and Ore Deposits of the Blewett Mining District. 
[Washington Geological Survey Bulletin 6. Olympia, 1o1t.] 
Geology and Ore Deposits of the Index Mining District. [Wash- 
ington Geological Survey Bulletin 7. Olympia, 1912.] 
A Preliminary Report on the Tertiary Paleontology of Western 
Washington. [Washington Geological Survey Bulletin 15. Olympia, 
1912.| 
—WEGENER, Dr. ALFRED. Die Entstehung der Kontinente. [Abdruck aus 
Dr. A. Petermanns Geographischen Mitteilung 1912, Aprilheft.] 
—WEINSCHENK, E. (ROBERT W. C1rarkK, translator.) Petrographic Methods. 
The Authorized English Translation of Part I, Anleitung zum Gebranch 
des Polarisationsmikoskops (Third revised edition) and Part II, Die 
Gesteinsbildenden Mineralien (Second revised edition). [New York: 
McGraw-Hill Book Co., 239 W. 30th St., 1912.] 
—Western Australia Geological Survey. Annual Progress Report of the 
Geological Survey for the Year ro1o. [Perth, ror1.] 
—West Virginia Geological Survey. Detailed County Report on Doddridge 
and Harrison Counties. [Morgantown, 1912.] 
—WIreELAnD, G. F. A Study of Some American Fossil Cycads. Part V. 
Further Notes on Seed Structures. [From the American Journal of 
Science, Vol. XXXII, August, rort.] 
—WILLIston, S. W. A New Family of Reptiles from the Permian of New 
Mexico. [From the American Journal of Science, Vol. XX XI, May, 1911.] 
—WILSoN, HERBERT M., AND Fay, ALBERT H. First National Mine-Safety 
Demonstration, Pittsburgh, Pa., October 30 and 31, ro11. With a 
Chapter on the Explosion at the Experimental Mine, by GEorGE S. RICE. 
[Bureau of Mines. Washington, 1912.| 
—Woop, B.D. Gazetteer of Surface Waters of California. Part I. Sacra- 
mento River Basin. [U.S. Geological Survey Water Supply Paper 295. 
Washington, 1912.| 
—Wooprvrfr, E. G., AND WINCHESTER, D. E. Coal Fields of the Wind River 
Region, Fremont and Natrona Counties, Wyoming. [U.S. Geological 
Survey Bulletin 471-G. Washington, 1912.] 
—Woopwarp,H.B. History of Geology. [New York and London: Putnam, 
Tg1I.] 
—Wooster, L. C. An Esker at Mason, Michigan. [Geological Papers 
Kansas Academy of Science.] 
