ADVERTISEMENT. Ill 



XXXIA'. Tbe Glacial Gravels of Maine and their iVeaocialed Deposits, by George H. Stone. 



— Sauropoda, by O. ('. Mar»h. 



— Stogosauria, by O. C. Marsh. 



— I'.rontotheriidai, by O. C. Marsh. 



— Report on Silver Clitfand Ten-Mile Mining Districts, Colorado, by S. F. EmmODS. 



— Flora of the Laramie and Allied Formations, by Frank Hall Knowlton. 



BULLETINS. 



I. On Hypersthene-Andesite and on Triclinic Pyroxene in Angitic Rocks, by Whitman Cross, with a 

 Geological Sketch of Buffalo Peaks, Colorado, by S. F. l':nimon8. 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 by Albert Williams, jr. 1883. 8°. 8 pp. Price 5 cents. 



; . 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, by Charles A. White. 1884. 8°. 36 pp. 9 pi. Price 5 cents. 



f . A Dictionary of Altitudes in the United States, compiled by Henry Gannett. 1884. 8°. 325 pp. 

 Price 20 cents. 



(.Klevations in the Dominion of Canada, by J. W. Spencer. 1884. 8°. 43 pp. Price 5 cents. 



7. Mapoteca Geologica .\mericana. 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. 

 6°. 184 pp. Price 10 cents. 



8. On Secondary Enlargements of Mineral Fragments in Certain Rocks, by R. D. Irving and C. R. 

 Van Ilise. 1884. 8°. 56 pp. 6 pi. Price 10 cents. 



9. A Report of Work done in the Washington Laboratorj' 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. 



II. On the Quaternary and Recent MoUusca 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°. 



86pp. 3pl. Price 5 cents. 



17. On the Development of Crystallization in the Igneous Rocks of Washoe, Neva«la, 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 MoUusca 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. d.ille| 

 brand. 1885. 8°. 114 pp. 1 pi. Price 1 cents. 



21. The Lignites of the Great Siou x Reservation; a Report on the Region between the Grand and 

 More.iu Rivers, Dakota, by Bailey Willis. 1885. 8°. 16 pp. 5 pi. Price 5 cents. 



22. On Now Gret aceous Fossils from California, by Charles A. White. 1885. 8°. 25 pp. 5 pi. 

 Price 5 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. 

 I'rire 15 cents. 



24. List of Marine MoUusca, comprising the Quaternary Fossils and Recent Forms from American 

 Localities between Cape Hattera-s and Cape Roq ue, including tbe Bermudas, by William Healy Dall. 

 1885. 8°. 336 pp. Price 25 cents. 



25. The Present Technical Condition of the St eel Industry of the United States, by Phineas Barne^" 

 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 1 cents. 



28. The Gabbros and Associated Hornblende Rocks occurring in tbe Neighborhood of Baltimore^ 

 aryland, by George Huntington Willi ams. 1886. 8°. 78 pp. 4 pi. Price 10 cents. 



