ADVERTISEMENT. 



The following are in press, viz: 



IX. Brachiopoda and Lamellibranchiata of the Raritan Clays aud Greensand Marls of New Jersey, 

 by Kobti t P. Whitfield. 1885. 4°. ix, 338 pp. 35 pi. 



X. Diuocerata. A Monograph of an Extinct Order of Gigantic Mammals, by Othniel Charles Marah. 

 1885. 4°. — , — pp. 56 pi. 



XI. Geological History of Lake Lahontau, a Quaternary Lake of Northwestern Nevada, by Israel 

 Cook Russell. 1885. 4°. xiv, 288 pp. 46 pi. 



The following are in preparation, viz : 



I. The Precious Metals, by Clarence King. 



— Geology and Mining Industry of Leadville, with atlas, by S. F. Emmons. 



—Geology of the Eureka Mining District, Nevada, with atlas, by Arnold Hague. 



—Lake Bonneville, by G. K. Gilbert. 



— Sauropoda, by Prof. O. C. Marsh. 



— Stegosanria, by Prof O. C. Marsh. 



BULLETINS. 



The Bulletins of the Siirvej- will contain such papers relating to the general purpos-e of its work as 

 do not propel ly come under the heads of Annual Repouts or Monographs. 



Each of these Bulletins will contain but one paper, and will hf complete in itself. They will, how- 

 ever, be numbered in a continuous series, and will in time he united into volumes of convenient size. 

 To facilitate this, each Bulletin will have two paginations, one proper to itself and another which be- 

 longs to it as part of the volume. 



Of this series of Bulletins Nos. 1 to 2t are already published, viz : 



1. On Hypersthene-Andesite and on Triclinic Pyroxene in Augitic Rocks, by "Whitman Cross, with 

 a Geological Sketch of Buflalo Peaks, Colorado, by S. F. Emmons. 1383. 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., by 

 Albert Williams, jr. l^■83. 8^. ii, 8 pp. Price 5 cents. 



3. On the Fossil Fimnas of the Upper Devonian along the meridian of 76° 30', from Tompkins County, 

 New York, to Btidi'oul 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. 



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

 Price 20 cents. 



6. 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, 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. 

 Van Hise. 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. 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 Cry.stallographic 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, by Henry Gannett. 



1885. 8°. 135 pp. Price 10 cents. 



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

 Strouhal. 1885. 8°. 238 pp. Price 15 cents. 



15. On the Mesozoic and Cenozoic Paleantology of California, by Dr. C. A. White. 1885. 8°. 33 pp. 

 Price 5 cents. 



16. On the higher Devonian Faunas of Ontario County, New York, by J. M. Clarke. 1885. S^. 

 86 pp. 3 pi. Price 10 cents. 



17. On the Development of Crystallization, etc., by Arnold Hague and J. 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 Dr. C. 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 tbe Rocky Mountains, by Whitman Cross and W. F. Hille- 

 braud. 1885. 8°. 114 pp. 1 pi. Price 10 cent^^. 



21. The Lignites of the Great Sioux Reservation, by Bailey Willis. 1885. 8". 16 pp. 5 pi. Price 5 

 cents. 



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

 l*rice 5 cents. 



