ADVERTISEMENT. Ill 
16. On the Higher Devonian Faunas of Ontario County, New York, hy 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 cents. 
18. On Marine Eocene, Fresh- water Miocene, aud 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- 
brand. 1885. 8°. 114 pp. 1 pi. Price 10 cents. 
21. The Lignites of the Great Sioux Reservation. A Report on the Region between the Grand and Mo- 
reau Rivers, Dakota, by Bailey Willis. 1885. 8°. 16 pp. 5 pi. Price 5 cents. 
22. On New Cretaceous Fossils from California, by Charles A. White. 1885. 8°. 25 pp. 5 pi. Price 
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23. Observations on the Junction between the Eastern Sandstone and the Keweenaw Series on 
Keweenaw Point Lake Superior, by R. D. Irving and T. C. Chamberlin. 1885. 8°. 124 pp. 17 pi. 
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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 
1884-85. 1886. 8°. 80 pp. Price 10 cents. 
28. The Gabbros and Associated Horn blende Rocks occurring in the Neighborhood of Baltimore, Md., 
by George Huntington Williams. 1886. 8°. 78 pp. 4 pi. Price 10 cents. 
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 Doo- 
little Walcott. 1886. 8°. 369 pp. 33 pi. Price 25 cents. 
31. Systematic Review of our Present Knowledge of Fossil Insects, including Myriapods and Arach- 
nids, by Samuel Hubbard Scudder. 1886. 8°. 128 pp. Price 15 cents. 
32. Lists and Analyses of the Mineral Springs of the United States; a Preliminary Study, by Albert 
C. Peale. 1886. 8°. 235 pp. Price 20 cents. 
33. Notes on the Geology of Northern California, by J. S. Diller. 1886. 8°. 23 pp. Price 5 cents. 
34. On the relation of the Laramie Molluscan Fauna to that of the succeeding Fresh-water Eocene 
and other groups, by Charles A. White. 1886. 8°. 54 pp. 5 pi. Price 10 cents. 
35. Physical Properties of the Iron-Carburets, by Carl Barus and Vincent Strouhal. 1886. 8°. 62 
pp. Price 10 cents. 
36. Subsidence of Fine Solid Particles in Liquids, by Carl Barus. 1886. 8°. 58 pp. 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, Kentucky, by J. S. Diller. 1887. 8°. 31 pp. 1 pi. Price 5 cents. 
39. The Upper Beaches and Deltas of the Glacial Lake Agassiz, by Warren Upham. 1887. 8°. 84 
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40. Changes in River Courses in Washington Territory due to Glaciation, by Bailey Willis. 1887. 8°. 
10 pp. 4 pi. Price 5 cents. 
41. On the Fossil Faunas of the Upper Devonian — the Genesee Section, New York, by Henry S. 
Williams. 1887. 8°. 121 pp. 4 pi. Price 15 cents. 
42. Report of work done in the Division of Chemistry and Physics, mainly during the fiscal year 
1885-'86. F. W. Clarke, chief chemist. 1887. 8°. 152 pp. 1 pi. Price 15 cents. 
43. Tertiary and Cretaceous Strata of the Tuscaloosa, Tombigbee, and Alabama Rivers, by Eugene 
A. Smith and Lawrence C. Johnson. 1887. 8°. 189 pp. 21 pi. Price 15 cents. 
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°. 94 
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46. Nature and Origin of Deposits of Phosphate of Lime, by R. A. F. Penrose, jr., with an Introduc- 
tion by N. S. Shaler. 1888. 8°. 143 pp. Price 15 cents. 
47. Analyses of Waters of the Yellowstone National Park, with an Account of the Methods of Anal- 
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48. On the Form and Position of the Sea Level, by Robert Simpson Woodward. 1888. 8°. 88 pp. 
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49. Latitudes and Longitudes of Certain Points in Missouri, Kansas, and New Mexico, by Robert 
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50. Form u 1 as and Tables to facilitate the Construction and Use of Maps, by Robert Simpson Wood- 
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