BIBLIOGRAPHY. 
Abbott, Clarence E. 
1. The iron-ore deposits of the Ely trough, Vermilion Range, Minnesota. — 
Lake Superior Min. Inst., Proc., vol. 12, pp. 116-142, 2 pis., 1907. 
Describes the geologic formations, the occurrence and relations of the ore deposits, and 
the mode of formation of the ore bodies. 
2. Geology of the Ely trough iron-ore deposits. — Eng. and Min. Jour., vol. 83, 
pp. 601-605, 4 figs., March 30, 1907. 
Abbott, James W. 
3. Pioche, Nevada. — Min. and Sci. Press, vol. 95, pp. 176-179, 2 figs., August 
10, 1907. 
Includes notes on the local geology and occurrence of the ores. 
Abel, O. 
4. Ueber den als Beckengiirtel von Zeuglodon beschriebenen Schultergiirtel 
eines Vogels aus dem Eociin von Alabama. — Centralbl. f. Mineral., Geol., u. 
Palaont., 1906, no. 15, pp. 450^58, 4 figs., 1906. 
Describes under the' name Alahamornis gigantea bird remains from the upper Eocene 
of Choctaw County, Alabama, originally described as the pelvic girdle of Zeuglodon. 
Adams, Alton D. 
5. Recession of Niagara Falls. — Sci. Am., vol. 93, no. 10, p. 178, September 
2, 1905. 
Adams, Frank D. 
6. Investigations on flow of rocks. — Carnegie Inst, of Washington, Yearb. 
no. 4, 1905, pp. 230-231, 1906. 
7. On the need of a topographical survey of the Dominion of Canada, par- 
ticularly with reference to the development of the economic resources of the Do- 
minion. — Canadian Min. Inst., Jour., vol. 9, pp. 74-86, 1906. 
8. Review of " The nature of ore deposits," by Richard Peck, translated and 
revised by Walter Harvey Weed.— Econ. Geology, vol. 1, no. 4, pp. 393-401, L906. 
9. Nepheline syenite in eastern Ontario. — Abstract: Geol. Soc. America, 
Bull., vol. 17, j). 695, 1907. 
Adams, Frank D., and Coker, Ernest G. 
10. An investigation into the elastic constants of rocks, more especially with 
reference to cubic compressibility. Washington, D. C, published by the Carnegie 
Institution of Washington, June, 1906. (Publication no. 46.) 69 pp., L6 pis. 
11. An investigation into the elastic constants of rocks, more especially with 
reference to cubic compressibility. — Am. Jour. Sci., 4th ser., vol. 22, pp. 95 123, 
12 figs., August, 1900. 
12. Experimental investigation of the compressibility and plastic deforma- 
tion of certain rocks.— Abstract : Geol. Soc. Am., Pull., vol. 16, pp. 564 565, L906. 
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