ADVERTISEMENT. Ill 



BULLETINS. 



1. On Hypersthene-Andesite and on Triclinic Pyroxene inAugitic Rocks, by Whitman Cross, 

 with a Geological Sketch of Buffalo Peaks, Colorado, by S. 1'. Emmons. 1883. 8 . 12 pp. 2 pi. 

 Price it) cents. 



2. Sold and Silver Conversion Tables, giving the Coining Values of Troj Ounces of Fine Metal, 

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



:;. ( In the Fossil Kaunas of tin- Upper 1 >i \ onian, along the Meridian of 76 30 . from Tompkins 

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



4. On Mesozoic Fossils, by Charles A. White. L884. 8°. 36 pp. 9 pi. Price5cents. 



5. A Dictionary of Altitudes in the United states, compiled by Henrj Gannett. L884. 8 . 325 

 pp. Price 20 cents. 



6. Elevations in the Dominion of Canada, by J. W. Spencer. L884. 8 . 13 pp. Price5cent». 



7. Mapoteca Geologica Americana. V. Catalogue of Geological Maps of America (North and 

 South |, 1752-lNsi. in < o-omapliie and Chronologic < >rder, bj Jules Marcou and John Belknap Maroou; 

 1884. 8 . 184 pp. Price 10 .ems. 



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

 R.VanHise. 1884. 8°. 56pp. 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. Chatard, assistant chemist. L884. 8 . 10 pp. Price 5 cents. 



10. i >n the Cambrian Faunas of North America. Preliminarj Studies, bj » lharles 1 little Wal- 



eott. L884. 8 . it pp. 1<> pi. Price 5 cents. 



11. iin the Quaternarj and Recent Mollnsca of the Great Basin; with Description of New 

 Forms, by R. Ellsworth Call! introduce, l l,\ a Sketch of the Quaternary Lakes of the Great Basin, 

 by G. K. Gilbert. 1884. 8°. 66pp. 6pl. Price5cents. 



12. A Crystallographic Study oftheThinolite of Lake Lahontan, by Edward S. liana. 1884. 8°. 

 ;;1 pp, :; 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. 



11. The Electrical and Magnetic Properties of the [ron-Carburets, by Carl Barns and Vincent 

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



15. On the Mesozoic and Cenozoic Paleontology of California, by Charles A. White. 1885. 8°. 

 33 pp. Price 5 cents. 



L6. 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, bj Arnold Hague and Joseph P. Iddings. 1885. 8°. 14 pp. PriceS 



cents. 



18. < in Marine Eocene. Fresh-water Miocene, and other i'ossil Mollnsca of Western North America, 

 by Charles A. White. 1885. 8°. 26pp. 3 pi. Price5 cents. 



19. Notes on the Stratigraphy of California, by George F.Becker. 1885. 8 . 28pp. Price5 cents. 



20. Contributions to the Mineralogy of the Rockj Mountains, by Whitman Cross and W. F. Hille- 

 brand. 1885. 8°. 114 pp. 1 pi. Price 10 cents. 



21. The Lignites oi the Great Sioux Reservation; a Report on the Region between the (i rand 

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



22. On New Cretaceous Fossils from California, bj Charles A. White. 1885. 8 . 25pp. 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 audi'. C. Chamberlin. 1885. 8 . 124 pp. 17 pi. 

 Price 15 cents. 



24. List of Marine Mollnsca . comprising the Quaternary fossils and Recent Form- from American 

 Localities between i apt' Hatteras and Cape Roque, including the Bermudas, bj William Healej Hall. 

 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 .lone in the Hi vision of Chemistry and Physics, mainly during the Fiscal Year 

 l884-'85. 1886. 8°. 80pp. Price 10 cents. 



28. The Gabbros and Associated Homldeiide Rocks oeourring in the Neighborly 1 of Baltimore, 



Md., by George Huntington Williams. 1886. 8°. 78pp. I pi. Price 10 cents. 



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

 s . 11 pp. 1 pi. Price 5 cents. 



30. Second Contribution to the studies on the Cambrian Kaunas of North America, by < lharles 

 1 little Wal.ott. 1886. 8°. 369pp. 33pl. Price 25 cents. 



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

 Arachnids, by Samuel Hubbard Scudder. 1886. 8°. 128pp. Price 15 cents. 



32. Lists and Analyses of the Mineral Springs of the United states; a Preliminarj studs, by 

 Albert C. l'eale. 1,886. s. 235 pp. Price 20 cents. 



33. NotesonthedcolouvofXortliernCalifornia.byJ.S.Diller. 1886. 8 , 23pp. Price icente 



34. On the Relation of the Laramie Molluscan Fauna to thai of the Succeeding Fresh-water Eocene 

 and Other Groups, by Charles A. White. 1886. 8 C . 51pp. 5 pi. Price 10 cents, 



