II ADVERTISEMENT. 



V. The Copper-Beariug Rocks of Lakf Superior, l>y Kolaud DiKT Irving. 1883. 4°. xvi,464pp. 

 1.5 1. 29 pi. and maps. Price |1.85. 



VI. Coutributions to the Knowledge of the Older Mesozoic Flora of Virginia, by William Morris 

 Fontaine. 1883. i'^. xi, 144 pp. 54 1. 54 pi. Price $1.05. 



VII. Silver-Lead Deposits of Eureka, Nevada, by Joseph Story Curtis. 1884. 4"-^. xlii, 200 pp. 

 16 pi. Price .$1.20. 



VIII. Paleontology of the Eureka District, by Charles Doolittle Waleott. 1884. 4°. xlii, 298 pp. 

 24 1. 24 pi. Price $1.10. 



IX. Brachiopoda and Lamellibrancbiata of theEaritau Clavs and Greensand Marlsof New Jersey, 

 by Robert P. Whitfield. 1885. 4°. xx, 338 pp. 35 pi. 1 map.' Price $1.15. 



X. Dinocerata. A Monograph of an Extinct Order of Gigantic Mammals, by Othuiel Charles 

 Marsh. 1886. 4". xviii, 243 pp. 56 1. 56 pi. Price |2.70. 



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

 Cook Rus.sell. Ift85. 4°. xiv, 288 pp. 46 pi. and maps. Price .$1.75. 



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

 mons. 1886. 4°. xxix, 770 pp. 45 pi. and atlas of 35 sheets folio. Price $8.40. 



XIII. Geology of the Quicksilver Deposits of the Pacific 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 Jersey and the Connecticut 

 Valley, by John S. Newberry. 1888. 4°. xiv, 152 pp. 26 pi. Price $1.0t>. 



XV. The Potomac or Younger Mesozoic Flora, by William Morris Fontaine. 1889. 4°. xiv, 

 377 pp. 180 pi. Text and plates bound separately. Price $2.50. 



XVI. The Paleozoic Fishes of North America, bv John Strong Newberry. 1889. 4°. 340 pp. 

 53 pi. Price $1.00. 



XVII. The P^loraof the Dakota Group, a posthumous work, bv Leo Lesquereux. Edited by F. H. 

 Kuowlton. 1891. 4^^. 400pp. 66 pi. Pricefl.lO. 



XVIII. Gasteropoda and Cephalopoda of the Raritan Cla.ys and Greensand Marls of New Jersey, 

 by Robert P. Whitfield. 1891. 4*^. 402 pp. 50 pi. Price $1.00. 



XX. Geology of the Eureka District, Nevada, with an atlas, by Arnold Hague. 1892. 4°. xvii, 

 419 pp. 8 pi. Price $5.25. 



In press : 



XIX. The Penokee Iron-Bearing Series of Northern Wisconsin and Michigan, by Roland D. 

 Irving and C. E. Van Hise. 



XXI. The Tertiary Rhymhopborous Coleoptera of North America, by S. H. Scudder. 



XXII. Geology of the Green Mountains in Ma.ssacbiisetts, by Messrs. Pumpelly, Wolff, and D.ale. 



In preparation : 



— Mollusca and Crustacea of the Miocene Formations of New Jersey, by R. P. Whitfield. 



— Sauropoda, by 0. C. Marsh. 



— Stegosauria, by O. C. Marsh. 



— BrontotheridsB, by O. C. Marsh. 



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



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



— The Glacial Lake Agassiz, by Warren Upham. 



BQLLETINS. 



1. On Hyperstheue-Audesite and on Triclinic Pyroxene in Augitie Rocks, b,y Whitman Cross, with 

 a Geological Sketch of Buifalo Peaks, Colorado, by S. F. Emmons. 1883. 8°. 42 pp. 2 pi. Price 10 

 cents. 



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

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



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

 County, N. Y., to Bradford County, Pa., 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 Altitudesiuthe United States,compiled by Henry Gannett. 1884. 8°. 325pp. 

 Price 20 cents. 



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



7. MapotecaGeologica Americana. ACatalogueof Geological Maps of America (North and South), 

 1752-1881, in geographic and chronologic order, by Jnles 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, assi.staut chemist. 1884. 8°. 40 pp. Price 5 cents. 



10. On the Cambrian Faunas of North America. Preliminary studies, by Charles Doolittle Wal- 

 eott. 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, bv G. K. 

 Gilbert. 1884. 8°. 66 pp. 6 pi. Price 5 cents. 



