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12. A Crystallographic Study of the Thinolite of Lake Lahontan, by Edward S. Dana. 1884. 8. 

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13. Boundaries of the United 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. On the Mesozoic and Cenozoic Paleontology of California, by Charles A. White. 1885. 8. 

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16. On the Higher Devonian Faunas of Ontario County, New York, by John M.Clarke. I88a. 8. 



86pp. 3 pi. Price 5 cents. 



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

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

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19. Notes on the Stratigraphy of California, by George F.Becker. 1885. 8. 28pp. Price5cents. 



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. On 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 Marino Mollusca, comprising the Quaternary fossils and recent forms from American 

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

 1885. 8 C . 336 pp. Price 25 cents. 



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

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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. TheGabbros 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, 

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

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31. Systematic Review of our 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 Preliminary Study, by 

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33. Noteson the Geology of Northern California, by J. S.DHler. 1886. 8. 23pp. Priceocents. 



34. On the relation of the Laramie Molluscan 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, byC'arlBarus. 1886. 8. 58pp. Price 10 cents. 



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



38. Peridotite of Elliott County, Kentucky, by J S. Diller. 1887. 8. 31pp. 1 pi. Price 5 cents. 



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

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

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41. On the Fossil Faunas of the Upper Devonian the Geuesee 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 Strataof the Tuscaloosa, Tombigbee, and Alabama Rivers, by Eugene 

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44. Bibliography of North American Geology for 1886, by Nelson H. Dartou. 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 tin- Methods of 

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



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