254 The American Geologist. April, i9oa 
Hobbs, W. H 
Suggestions regarding the classification of the igneous rocks. (Jour. 
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Hollick, Arthur. / 
Some features of the drift of Staten island. (Annals, N. Y. Acad. 
Sci.. vol. 12, July, 1899, pp. 91-102.) 
Holmes, J. A. 
Mica deposits of the United States. (Bull. Geol. Soc. Am., vol. 10, 
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Hopkins, T. C. 
Conshohocken plastic clays. (Bull. Geol. Soc. Am., vol. 10, pp. 
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Julien, Alexis A. 
Building stones — elements of strength in their construction and 
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3 plates, 1899.) 
Lakes, Arthur. 
The Butte mining district. (Mines and Minerals, vol. 22, pp. 348- 
350, Mar. 1900.) 
McCallie, S. W. 
Some notes on the brown iron ores of Georgia. (Eng. & Min. 
Jour., vol. 69, p. 255, Mar. 3, 1900.) 
McKellar, Peter. 
Gold-bearing veins of Bog bay. Lake of the Woods. (Bull. Gee'. 
Soc. Am., vol. 10, pp. 495-497, 1898 [1900].) 
Merrill, F.J. H. 
Origin of the Highland gorge of the Hudson river. (Bull. Geol. 
Soc. Am., vol. 10, pp. 498-499. Abstract, 1898 [1900].) 
Moses, Alfred J. 
Professor Thomas Egleston. (Science, N. S., vol. 11, pp. 361-364, 
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Moses, Alfred J. 
Simple tables for the determination of the common or economic- 
ally important minerals. (School of Mines Quarterly, vol. 21, p. 192, 
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[Orton, Edward.] 
In Memoriam. Edward Orton, Ph.D., LL.D. Addresses delivered 
at the Ohio State University, Sunday, Nov. 26, 1899. Portrait, pp. 
62. Columbus, O. Addresses by MendenhalK Gilbert, Godfrey, Scott 
and Derby. 
Osborn, Henry F. 
The angulation of the limbs of Proboscidia, Dinocerata and other 
quadrupeds in adaptation to weight. (Am. Nat., vol. 34. Feb., 1900, 
pp. 89-94.) 
Pirsson, L. V. 
.(Egirite Granite from Miask, Ural IMts. (Am. Jour. Sci., vol. 9, 
pp. 199-201, Mar. 1900.) 
Preston, H. L. 
Illinois Gulch meteorite. (Am. Jour. Sci., vol. 9, pp. 201-203, Mar. 
1900.) 
