Field book of common rocks and minerals

by Frederic Brewster Loomis

This Fascinating Oil Business. By M. W. Ball, 1940, Bobbs-Merrill Co. A simple and elementary description of the petroleum industry.

Geology of Coal. By O. Stutzer and A. C. Noe, 1940, University of Chicago Press.

GENERAL GEOLOGY

Down to Earth. By C. Croneis and W. C. Krumbein, 1936, University of Chicago Press. An introduction to geology, profusely illustrated.

Textbook of Geology Part I—Physical Geology. 4th Edition, by C. R. Longwell, A. Knopf, and R. F. Flint, 1939, John Wiley and Sons. A standard text on geology.

Field Geology. 4th Edition, by F. H. Lahee, 1941, McGraw-Hill Book Co. Recognition and interpretation of geologic structures and topographic forms as they are observed, and methods of geologic work.

PRECIOUS STONES

A Book of Precious Stones. By J. Wodiska, 1910, G. P. Putnam’s Sons. Written for jewelers, but of general interest.

The Curious Lore of Precious Stones. By G. F. Kunz, 1913, Lippincott. Legends and stories of the gem minerals.

The Magic of Jewels and Charms. By G. F. Kunz, 1915, Lippincott.