1 1 ADVERTISEMENT. 



IX. Bracliiopodii and Laniellibiaiicbiataof tlioKaritaii Clays and Oreeusaud Marls of New Jersey, 

 by Robert P. Whitlield. 18S5. 4°. xx, 338 pp. 35 pi. 1 map. Price $1.15. 



X. Diuocorata. A Mouograidi of an Extinct Order of Gif^aiitio Mamuialt?, by Otlmiel Charles 

 Marsh. 1886. 4°. xviii, a43pp. r>6\. 5G pi. Price $2.70. 



XI. Geological History of Lake Lahontan, a Qiiatoruary Lake of Northwestern Nevada, by I.srael 

 Cook Russell. 1»85. 4°. xiv, 288 pp. 46 pi. and maps. Price $1.75. 



XII. Geology and Mining Industry of Ee.adville, Colorado, with atlas, by Samuel Franklin Em- 

 mons. 1886. 4°. xxix, 770 pp. 45 pi. and atlas of 35 sheets folio. Price $6.40. 



XIII. Geology of the Quicksilver Deposits of the Pacilic Slope, with atlas, by George F. Becker. 

 1888. 4°. xix, 486 pp. 7 pi. and atlas of 14 sheets folio. Price $2.00. 



XIV. Fossil Fishes and Fossil Plants of the Triassic Rocks of New Jersev and the Connecticut 

 Valley, by John S. Newberry. 1888. 4°. siv, 152 pp. 20 1>1. Price $1.00. 



In preparation : 



XV. Younger Mesozoic Flora of Virginia, by William M. Fontaine. 



XVI. Paleozoic Fishes of North America, by J. S. Newberry. 



XVII. Description of New Fossil Plants from the Dakota Group, by Leo Lcsriuereux. 

 — Gasteropoda of the New Jersey Cretaceous and Eocene Marls, by R. P. WhitUeld. 

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



— Lake Bonneville, by G. K. Gilbert. 



— Sauropoda, by O. C. Marsh. 



— Stegosauria, by O. C. Marsh. 



— Brontothcridic, by 0. C. Marsh. 



— The Penokee-Gogebic Iron-Bearing Series of North Wisconsin and Michigan, by Roland D. Irving. 



— Report on the Denver Coal Basin, by S. F. Emmons. 



— Report on Silver Clitf and Ten-Mile Miuing District, Colorado, by S. F. Emmons. 



— Flora of the Dakota Grouj), by J. S. Newberry. 



— The Glacial Lake Agassiz, by Warreu Uphaui. 



— Geology of the Potomac Formation in Virginia, by W. M. Foutaiue. 



BULLETINS. 



Each of the Bulletins contains but one paper and is cumplelc in itself. They are, however, num- 

 bered iu a continuous scries, aud nuiy be bound iu volumes of couvenient size. To facilitate this, each 

 Bulletin has two paginations, one proper to itself aud another which belongs to it as part of the volume. 



1. On HyperstheneAndesite and on Triclinic Pyroxeue iu Augitie Rocks, by Whitman Cross, with 

 a Geological Sketch of Buffalo Peaks, Colorado, by S. F. Emmons. 1883. 8^\ 42 iip. 2 pi. Price 10 

 cents. 



2. Gold aud Silver Conversion Tables, giving the coining values of troy ounces of lino metal, etc., 

 coiupnted by Albert Williams, jr. 1883. b'^. 8 pp. Price 5 cents. 



3. On the Fossil Faunas of the Upper Devonian along the meridian of 70^^ 30', from Tomiikins 

 County, N. Y., to Bradford County, Pa., by Henry S. William.s. 1884. 8°. 36 pp. Price5ceuls. 



4. On Mesozoic Fossils, by Charles A. White. 1884. 8"^. 36 i)p. 9 xil. Price 5 cents. 



5. ADictiouary of Altitudes iu the United States, ooiupiled by Henry Gannett. 1884. 8 J. 325 pp. 

 Price 20 cents. 



6. Elevations in the Dominiou of Canada, by J. W. Spencer. 1884. 8°. 43 )ip. Price 5 cente. 



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 Johu Belknap Marcou. 1884. 

 8°. 184 pp. Price 10 cents. 



8. Ou Secondary Eulai-geiueuts of Mineral Fragments iu Certain Rocks, by R. D. Irving and C. R. 

 Van Hise. 1884. 8". 06 pp. 6 pi. Price 10 cents. 



U. A Report of work done iu 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 tho Cambrian Faunas of North America. Prelimiuary studies, by Charles Doolittlo Wal- 

 cott. 1884. 8°. 74 ,pp. 10 pi. Price 5 cents. 



11. On the Quaternary and Roceut Mollusca of the Great Basin ; with Descriptions of New Form.s, 

 bv R. Ellsworth Call.-. Introduced by a sketch of the Quaternary Lakes of the Great Basin, bv G. IC. 

 Gilbert. 1881. 8°. C6 pp. C pi. Price 5 cents. 



12. A Crystallographic Study of the Thijiolite of Lake Lahontan, by Edward S. Dana. 1884. 8°. 

 31 pp. 3 1)1. Price 5 cents. 



13. Boundaries of th<^ United States :ind of the several States and Territories, with a Historical 

 Sketch of the Teriitoiiul Changes, by Henry Gauueft. ,1885. S'^. 135 pp. Price 10 cents. 



14. The Fleet lical and Magnetic Properties of the Irou-Carburets, by Carl Barus and Vincent 

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



15. Ou 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. 3 111. Price 5 tents. 



17. On the Development of Crystallization in the Igneous Rocks of Washoe, Nevada, with Notes 

 on I he Geology of the District, by Arnold Hague aud Jo,seph P. Iddings. 1885. 8°. 44 pp. Price 5 

 cents. 



