16 
List oF PAPERS PUBLISHED BY Dr. WADSWORTH DURING 
THE YEAR. 
1. The Fortieth Parallel Rocks. Proc. Bost. Soc. Nat., 1883, 
XXII. 412-432. 
2. On the Evidence that the Earth’s Interior is Solid. American 
Naturalist, 1884, XVIII. 587-594, 678-686, 767-773. 
3. Lithology of some Cordilleran Volcanoes. Ibid., pp. 526-528. 
4, Methods of Instruction in Mineralogy. Pop. Sci. Monthly, 
1884, XXIV. 754-759. 
5. Descriptive Catalogue of One Hundred Thin Sections of Ameri- 
can and Foreign Rocks, for the Use of Students of Microscopical 
Lithology. 20 pp. 
6. Notes on the Rocks and Ore Deposits in the Vicinity of Notre 
Dame Bay, Newfoundland. Am. Jour. Sci, 1884, (3), XXVIII. 
94-104. 
7. A Microscopic Study of some South Wales Rocks. Trans. 
Am. Inst. Mining Engineers, 1883, XI. 499-501. 
8. The Theories of Ore Deposits. The Nation, Feb. 7, 1884. 
9. The Lateral Secretion Theory of Ore Deposits. Eng. and 
Mining Journal, 1884, XX XVII. 364, 365. 
10. Résumé of the “Mineral Resources of the United States.” 
Science, 1883, II. 413, 414. 
11. The Maine Building Stones. Ibid., pp. 771, 772. 
12. The Olivine Rocks of North Carolina. Ibid., III. 486, 487. 
13. The Relation of the “Keweenawan Series” to the “ Eastern 
Sandstone.” Ibid., p. 553. 
14. Parallel Development of Personal Names and of Natural His- 
tory Nomenclature. Ibid., IV. 109, 110. 
15. Some United States Geologists and the Propylite Question. 
Ibid., p. 111. 
