PUBLICATIONS ON IRON AND MANGANESE. 
A number of the principal papers on iron and manganese ores pub- 
lished by the United States Geological Survey, or by members of the 
Survey, are listed below: 
Barus, P. The present technical condition of the steel industry of the United 
States. U. S. Geol. Survey Bulletin No. 25, 85 pp. 1885. (Out of print.) 
Birkinbine, J. American blast-furnace progress. In Mineral Resources U. S. 
for 1883-84, pp. 290-311. 1885. 
The iron ores east of the Mississippi River. In Mineral Resources U. S. 
for 1886, pp. 39-98. 1887. 
The production of iron ores in various parts of the world. In Sixteenth 
Ann. Rept. U. S. Geol. Survey, Pt. Ill, pp. 21-218. 1894. 
Iron ores. In Nineteenth Ann. Rept. U. S. Geol. Survey, Pt. VI, pp. 
23-63. 1898. 
Manganese ores. In Nineteenth Ann. Rept. U. S. Geol. Survey, Pt. 
VI, pp. 91-125. 1898. 
Chisolm, F. F. Iron in the Rocky Mountain division. In Mineral Resources 
U. S. for 1883-84, pp. 281-286. 1885. 
Clements, J. M. The Vermilion iron-bearing district of Minnesota. Mono- 
graph U. S. Geol. Survey Vol. XLV. 463 pp. 1903. 
Clements. J. M., Smyth. H. L., Bayley, W. S.. and Van Hise, C. R. The 
Crystal Falls iron-bearing district of Michigan. Monograph U. S. Geol. Survey 
Vol. XXXVI, 512 pp. 1899. 
Hayes, C. W. Geological relations of the iron ores in the Cartersville district, 
Georgia. In Trans. Am. Inst. Min. Eng., Vol. XXX, pp. 403-419. 1901. 
Irving, R. D., and Van Hise, C. R. The Penokee iron-bearing series of Michi- 
gan and Wisconsin. Monograph U. S. Geol. Survey Vol. XIX, 534 pp. 1892. 
Kemp, J. F. The titaniferous iron ores of the Adirondacks [New York]. In 
Nineteenth Ann. Rept. U. S. Geol. Survey, Pt. III. pp. 377-422. 1899. 
Leith, C. K. The Mesabi iron-bearing district of Minnesota. Monograph 
U. S. Geol. Survey Vol. XLIII. 316 pp. 1903. 
Smith, E. A. The iron ores of Alabama in their geological relations. In Min- 
eral Resources U. S. for 1882, pp. 149-161. 1883. 
Smith, Geo. O. , and Willis, B. The Clealum iron ores, Washington. In Trans. 
Am. Inst. Min. Eng., Vol. XXX, pp. 356-366. 1901. 
Spencer, A. C. The iron ores of Santiago, Cuba. In Eng. and Min. Jour. , Vol. 
LXXII, pp. 633-634. 1901. 
Swank. J. M. The American iron industry from its beginning in 1619 to 1886. 
In Mineral Resources U. S. for 1886, pp. 23-38. 1887. 
Iron and steel and allied industries in all countries. In Sixteenth Ann. 
Rept. U..S. Geol. Survey, Pt. Ill, pp. 219-250. 1894. 
Van Hise, C. R. , Bayley, W. S. , and Smyth, H. L. The Marquette iron-bearing 
district of Michigan, with atlas. Monograph U. S. Geol. Survey Vol. XXVIII, 
608 pp. 1897. 
Weeks, J. D. Manganese. In Mineral Resources U. S. for 1885, pp. 303-356. 1886. 
Manganese. In Mineral Resources U. S. for 1887, pp. 144-167. 1888. 
Manganese. In Mineral Resources U. S. for 1892, pp. 169-226. 1893. 
Yale, C. G. Iron on the Pacific coast. In Mineral Resources U. S. for 1883-84, 
pp. 286-290. 1885. 
In addition to the papers listed above, iron deposits of more or less 
importance have been described in the following geologic folios (for 
location and further details see pp. 11-13) : Nos. 2, 4, 5, 6, 8, 10, 11, 12, 
14, 18, 10, 20, 21, 22, 24, 25, 28, 32, 33, 35, 36, 37, 40, 43, 44, 55, 56, 59, 
61, 62, 64, 70, 72, 78, 82, 83, 84. 
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