Authors' Catalogue. 389 
Herrick, C. L. 
The geology of the white sands of New Mexico. (Jour. Geol., 
vol. 8, pp. 1 12-128. Feb. -Mar. 1900.) 
Hess, W. H. 
The origin of nitrates in cavern earths. (Jour. Geol., vol. 8, pp. 129- 
134. Feb.-Mar. igoo.) 
Hidden, W. E. 
Hayden Creek, Idaho, meteoric iron. (Am. Jour. Sci., vol. 9, p. 
367. May, 1900.) 
Hillebrand, W. F. 
Chemical notes on the composition of the roofing slates of eastern 
New York and western Vermont. (19th Ann. Rep., U. S. G. S., Part 
III, pp. 300-307, 1900.) 
Jenney, W. P. 
Field observations in the Hay Creek coal fields. (19th Ann. Rep., 
Part II, U. S. G. S., pp. 568-593. 1900.) 
Kemp, J. F. 
The titaniferous iron ores of the Adirondacks. (19th Ann. Rep., 
U. S. G. S., Part III, pp. 383-422, pis. Iv-lxiii. 1900.) 
Keyes, C. R. 
The causes of ore deposits. (Am. Geol., vol. 25, p. 323. May, 
1900.) 
King, F. H. 
Principles and conditions of the movements of ground water. (19th 
Ann. Rep., U. S. G. S., pp. 59-294, pis. vi-xvii. 1899.) 
Mendeniiail, W. C. (G. O. Smith and) 
Tertiary granite in the northern Cascades. (Bull. G. S. A., vol. 11, 
pp. 223-230. April, 1900.) 
Newsom, J. F. (J. C Branner and) 
Syllabus of a course of lectures on economic geology. 2nd edi- 
tion, interleaved, pp. 342. Stanford University, 1900. 
Penfield,S. L. (and W. E. Ford) 
Siliceous calcites from the bad lands, Washington county. South 
Dakota. (Am. Jour. Sci., vol. 9, pp. 352-354. May, 1900.) 
Perrine, C. D. 
Earthquakes in California in 1898. U. S. G. S., Bull. 161, i plate, 
pp. 29. Washington, D. C. 
Reid, H. F. 
Variations of Glaciers. V. (Jour. Geol., vol. 8, pp. 154-159. Feb.- 
Mar. igoo.) 
Rogers, A. F. 
Mineralogical notes. (Am. Jour. Sci., vol. 9, pp. 364-366. May, 
1900.) 
Rowley, R. R. 
Descriptions of new species of fossils from the Devonian and Sub- 
carbotiiferous rocks of Alissouri. (Am. Geol., vol. 25, pp. 261-273. 
JNIay, 1900.) 
