ADVERTISEMENT. Ill 
XXXIV. The Glacial Gravels of Maine and their Associated Deposits, hy George H. Stone. 
— The later Extinct Floras of North America, by John Strong Newberry ; edited hy Arthur Hollick. 
— Flora of the Lower Coal Measures of Missouri, hy David White. 
— The Crystal Falls Iron-Bearing District of Michigan, by J. Morgan Clements and Henry Lloyd 
Smyth; with a Chapter on the Sturgeon River Tongue, by William Shirley Bayley. 
— Sauropoda, by O. C. Marsh, 
— Stegosauria, by O. C. Marsh. 
— Brontotheriidaj, hy O. C. Marsh. 
— Flora of the Laramie and Allied Formations, hy Frank Hall Knowlton. 
BULLETINS. 
1. On Hypersthene-Andesite and on Triclinic Pyroxene in Augitic Bocks, by Whitman Cross, with a 
Geological Sketch of Buffalo Peaks, Colorado, by S.F.Emmons. 1883. 8°. 42 pp. 2 pi. Price 10 cents. 
2. Gold and Silver Conversion Tables, giving the Coining Value of Troy Ounces of Fine Metal, etc., 
computed hy Albert Williams, jr. 1883. 8°. 8 pp. Price 5 cents. 
S.On the Fossil Faunas of the Upper Devonian, along the Meridian of 76° 30', from Tompkins County, 
New York, to Bradford County, Pennsylvania, by Henry S. Williams. 1884. 8°. 36 pp. Price 5 cents. 
4. On Mesozoic Fossils, hy Charles A. White. 1884. 8°. 36 pp. 9 pi. Price 5 cents. 
5. A Dictionary of Altitudes in the United States, compiled by Henry Gannett. 1884. 8°. 325 pp. 
Price 20 cents. 
(.Elevations in the Dominion of Canada, by J. W. Spencer. 1884. 8°. 43 pp. Price 5 cents. 
7. Mapoteca Geologica Americana. A Catalogue of Geological Maps of America (North and South) 
1752-1881, in Geographic and Chronologic Order, by Jules Marcou and John Belknap Marcou. 1884. 
8°. 184 pp. Price 10 cents. 
8. On Secondary Enlargements of Mineral Fragments in Certain Rocks, by R. D. Irving and C. R. 
VanHise. 1884. 8°. 56 pp. 6 pi. Price 10 cents. 
9. A Report of Work done in the Washington Laboratory during the Fiscal Year 1883-84. F. W. 
Clarke, Chief Chemist. T. M. Chatard, Assistant Chemist. 1884. 8°. 40 pp. Price 5 cents. 
10. On the Cambrian Faunas of North America. Preliminary Studies, by Charles Doolittle Walcott. 
1884. 8°. 74 pp. 10 pi. Price 5 cents. 
11. On the Quaternary and Recent Mollusca of the Great Basin; with Descriptions of New Forms, 
by R. Ellsworth Call. Introduced by a Sketch of the Quaternary Lakes of the Great Basin, by G. K. 
Gilbert. 1884. 8°. 66 pp. 6 pi. Price 5 cents. 
12. A Crystallographic Study of the Thinolite of Lake Lahontan, by Edward S. Dana. 1884. 8°. 
34 pp. 3 pi. Price 5 cents. 
13. Boundaries of the United States and of the Several States and Territories, with a Historical 
Sketch of the Territorial Changes, by Henry Gannett. 1885. 8°. 135 pp. Price 10 cents. 
14. The Electrical and Magnetic Properties of the Iron -Carburets, by Carl Barus and Vincent 
Strouhal. 1885. 8°. 238 pp. Price 15 cents. 
15. On the Mesozoic and Cenozoic Paleontology of California, by Charles A. White. 1885. 8°. 33 pp. 
Price 5 cents. 
16. On 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 
cents. 
18. 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 AVhitman 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 
Morean 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 f cents. 
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. 
Price 15 cents. 
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 Healy 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, hy 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. 
