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12. A Crystallogrnpliic Study of theThinoliteof Lake Lahontan, by Edwards. Dana. 1884. 8°. 

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13. Boundaries of the Uuited States and of the several States and Territories, with a Historical 

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14. The Electrical and Magnetic Properties of the Iron-Carburets, by Carl Barns and Vincent 

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15. Ou the Mesozoic and Cenozoic PaTeontology of California, by Charles A. White. 1885. 8°. 

 33 pp. Price 5 cents. 



16. Ou the Higher Devonian Faunas of Ontario County, New York, by .John M. Clarke. 1885. 8°. 

 86 pp. 3 pi. Price 5 cents. 



17. On the Development of Crystallization in the Igneous Rocks of Washoe, Nevada, with Notes 

 on the Geology of the District, by Arnold Hague and Joseph P. Iddings. 1885. 8*^. 44 pp. Price 5 

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IH. On Marine Eocene, Fresh-water Miocene, and other Fossil Mollusca of Western North America, 

 by Charles A. White. 1885. 8°. 26 pp. 3 pi. Price 5 cents. 



19. Notes on the Stratigraphy of California, by George F. Becker. 1885. 8°. 28 pp. Price 5 cents. 



20. Contributions to the Mineralogy of the Rocky Mountains, by Whitman Cross and W. F. Hille- 

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21. The Lignites of the Great Sioux Reservation. A Report on the Region between the Grand and 

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22. Ou New Cretaceous Fossils from California, by Charles A. White. 1885. 8°. 25 pp. 5 pi. 

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23. Observations on the Junction between the Eastern Sandstone and the Keweenaw Series on 

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24. List of Marine Mollusca, comprising the Quaternary fossils and recent forms from American 

 Localities between Cape Hatteras and Cape Roque, including the Bermudas, by William Healey Dall. 

 1885. 8'^. 336 pp. Price 25 cents. 



25. The Present Technical Condition of the Steel Industry of the United States, by Phineas Barnes. 

 1885. 8°. 85 pp. Price 10 cents. 



26. Copper Smelting, by Henry M. Howe. 1885. 8°. 107 pp. Price 10 cents. 



27. Report of work done in the Division of Chemistry and Physics, mainly during the fiscal year 

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28. The Gabbros and Associated Hornblende Rocks occurring in the Neighborhood of Baltimore, 

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29. On the Fresh- water Invertebrates of the North American Jurassic, by Charles A. White. 1886. 

 8°. 41 pp. 4 pi. Price 5 cents. 



30. Second Contribution to the Studies on the Cambrian Faunas of North America, by Charles 

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31. Systematic Review of onr Present Knowledge of Fossil Insects, including Myriapods and 

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32. Lists and Analyses of the Mineral Springs of the United States; a Pi-eliminary Study, bv 

 Albert C. Peale. 1886. "8°. 235 pp. Price 20 cents. 



33. NotesontheGeologyof Northern California, by J. S.Diller. 1886. 8°. 23pp. PriceScents. 



34. On the relation of the Laramie Mollnscan Fauna to that of the succeeding Fresh- water Eocene 

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35. Physical Properties of the Iron-Carburets, by Carl Barns and Vincent Strouhal. 1886. 8'^. 

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36. Subsidenceof Fine Solid Particles in Liquids, by Carl Barus. 1886. 8°. 58pp. Price 10 cents. 



37. Types of the Laramie Flora, by Lester F. Ward. 1887. 8°. 354 pp. 57 pi. Price 25 cents. 



38. Peridotite of Elliott County, Keutncky, by J S.Diller. 1887. 8°. 31pp. 1 pi. PriceScents. 



39. The Upper Beaehes and Deltas of the Glacial Lake Agassiz, by Warren Upham. 1887. 8". 

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40. Changes in River Courses in Washington Territory dne to Glaciation, by Bailey Willis. 1887. 

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41. On the Fossil Faunas of the Upper Devonian — the Genesee Section, New York, by Henry S. 

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42. Report of work done in the Division of Chemistry and Physics, mainly during the fiscal year 

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43. Tertiary and Cretaceous Strata of the Tuscaloosa, Tombigbee, and Alabama Rivers, by Eugene 

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44. Bibliography of North American Geology for 1886, by Nelson H. Darton. 1887. 8°. 35 pp. 

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45. The Present Condition of Knowledge of the Geology of Texas, by Robert T. Hill. 1887. 8°. 

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46. Nature and Origin of Deposits of Phosphate of Lime, by R. A. F. Penrose, jr., with an Intro- 

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47. Analyses of Waters of the Yellowstone National Park, with an Account of the Methods of 

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48. On the Form and Position of the Sea Level, by Robert Simpson Woodward. 1888. 8°. 88 

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