ADVERTISEMENT. Ill 



BULLETINS. 



1. Ou Hypersthenc-Andesite and on Tricliuie Pyroxene in Augitic Rocks, by Whitman Cross, 

 with si Geological Sketch of Buffalo Peaks, Colorado, by S. 1'. Emmons. 1883. * . 42 pp. 2 pi. 

 Price 10 cents. 



2. Gold and Silver Conversion Tables, giving the Coining Values of Troy < »unces of Fine Metal. 

 etc., computed by Albert Williams, jr. 1883. 8°. 8 pp. Price 5 cents. 



3. < >n t he Fossil Faunas, of the Upper Devonian, along the Meridian of 76 30', from Tompkins 

 County, N. Y., to Bradford County, Pa., oy Henry S. Williams. 1884. 8 . 36 pp. Price5cents. 



I. 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 bj Henry Gannett. 1884. 8°. 325 

 pp. Price 20 cents. 



6. Elevations in the Dominion of Canada, hy .1. \V. .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 1(1 cents. 



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

 R.VanHise. 1884. 8 . 56 pp. 6pl. 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. Cliatard, assistant chemist. 1884. 8 : . 40 pp. Price 5 cents. 



10. On the Cambrian Faunas of North America. Preliminary Studies, by ( lharles Doolittle Wal- 

 cott. 1884. 8. 74pp. lOpl. Price 5 cents. 



II. Ou the Quaternary and Recent Mollusca of the Great Basin; with Description 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 Barns 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 . 14 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 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 Moreau Rivers, Dakota, by Bailey Willis. 1885. 8 G . 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 5 cents. 



23. Observations on the .function between the Eastern Sandstone and the. Keweenaw Series on 

 Keweenaw Point. Lake Superior, by R. D. Irving and T. C. Chamberlin. 1885. 8 C . 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 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 I >i vision of Chemistry and Physics, mainly during the Fiscal Year 

 1884-'85. 1886. 8°. 80 pp. Price 10 cents. 



28. The Gabbros and Associated Hornblende Rocks occurring in the Neighborhood of Baltimore, 

 Mil., by (ieorge Huntington Williams. 188(i. 8°. 78 pp. 4 pi. Price 10 cents. 



29. On the Fresh- water In vertebrates of t lie North American Jurassic, by( lharles A. White. 1886. 

 8 . 41pp. 4 pi. Price 5 cents. 



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

 1 little Walcott. 188b. s. 369 pp. 33pl. Price 25 cents. 



31. Systematic Review of our Present Knowledge of Fossil Iusects, including Myriapods and 

 Arachnids, 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 ('. l'eale. 1886. 8. 235 pp. Price 20 cents. 



33. Notes on the Geology of Northern California, by J. S.Diller. 1886. 8 . 2:! pp. l'rieeScents. 



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. 



