A century of science in America

by Unknown

Petrogenesis, C. Doelter, Braunschweig, 1906.

Igneous Rocks, vols. 1 and 2, J. P. Iddings, New York, 1909 and 1913.

Problem of Volcanism, Iddings, New Haven, 1914.

Natural History of Igneous Rocks, Alfred Harker, London, 1909.

Igneous Rocks and their Origin, R. A. Daly, New York, 1914.

[132]. Among these may be mentioned:

Rosenbusch u. Wülfing, Physiog. der petrog. wicht. Min., Stuttgart, 1905.

Iddings, J. P., Rock-Minerals, 1st ed., New York, 1906.

Johannsen, A., Manual of Petrographic Methods, New York, 1914.

Winchell, N. H. and A. N., Elements of Optical Mineralogy, New York, 1909.