472 RECENT PUBLICATIONS 
—CLELAND, H. F. The Fossils and Stratigraphy of the Middle Devonic of 
Wisconsin. [Wisconsin Geological and Natural History Survey Bulletin 
XXI. Scientific Series No. 6. Madison, 1911.] 
—Colorado School of Mines Magazine. [The Colorado School of Mines 
Alumni Association, Publishers, Golden, Colo. September, 1912.] 
—Concrete, Vol. XII, No. 2, February, 1912. [Detroit, Mich.: Concrete 
Publishing Co.] 
—CoPELAND, D., MANN, H. T., AND ROESLER, H. A. Metallurgical and Ore 
Dressing Laboratories of the Missouri School of Mines and Metallurgy. 
[Bulletin of the School of Mines and Metallurgy, University of Missouri, 
Vol. I, No. 2, Rolla. February, 1912.] 
—Craic, E.H.C. Oil-Finding. An Introduction to the Geological Study of 
Petroleum. With an Introduction by Sir Boverton Redwood. [New 
York: Longmans, Green & Co., 1912.] 
—CRANE, G. W. The Iron Ores of Missouri. [Missouri Bureau of Geology 
and Mines, Vol. X, Second Series. Jefferson City, 1912.] 
—Crook, A. R., Pu.D. Geology of Sangamon County. [Springfield, Il., 
1912.| 
The Training of Museum Curators. [Reprinted from the Proceed- 
ings of the American Association of Museums, Vol. IV, ro1o.] 
—Davison, C. The Origin of Earthquakes. [New York: Putnam, 1912.] 
—Day, ARTHUR L., AND SOSMAN, RoBertT B. The Expansion Coefficient of 
Graphite. [Reprinted from the Journal of Industrial and Engineering 
Chemistry, Vol. IV, No. 7, July, 1912.] 
—DeErBY, ORVILLE A. Bibliographical List of the Scientific Publications of. 
Typographia Leuzinger. [Rio de Janeiro, 1908.] 
—DItier, J. S., AND OTHERS. Advance Chapter from Contributions to 
Economic Geology (Short Papers and Preliminary Reports), 1910. Part 
I. Metals and Nonmetals except Fuels. Gold and Silver. [U-.S. 
Geological Survey Bulletin 470-B. Washington, 1911.] 
—Duwnstan, C. E. Preliminary Examination of the Forest Conditions of 
Mississippi. [Mississippi Geological Survey Bulletin 7. Jackson, Miss., 
‘tgt10.] 
—Dvu Torr, A.L. Geological Map of the Province of the Cape of Good Hope. 
Sheet XXVI. [Geological Commission. Cape Town, 1912.] 
—EckEL, E. C. Building Stones and Clays: Their Origin, Characters and 
Examination. [New York: John Wiley & Sons, 1912.] 
—ELuis, Don Cartos. A Working Erosion Model for Schools. U.S. Depart- 
ment of Agriculture Circular 117. Washington, 1912.] 
—Emmons, W. H., AND LarsEN, E.S. A Preliminary Report on the Geology 
and Ore Deposits of Creede, Colorado. [U.S. Geological Survey Bulletin 
530-E. Washington, 1912.]. 
