ADVERTISEMENT. Ill 



XXXII. Geology of the Yellowstone National Park, Part II, Descriptive Geology, Petrography, 

 ami Paleontology, by Arnold Hague, J. P. Iddiugs, W. Harvey Weed. Charles 1>. Walcott. G. II. Girty, 

 T. \\ . Stanton, anil F. H. Knowlton. 1899. i c . xvii, 893 pp. 121 pi. I'rice 72. 1.Y 



XXXIII. Geology of the Narragausett Basin, by N. S. Shaler, .1. 1. Wnodworth, and August V. 

 Foerste. 1899. 4-. xx, 402 pp. 31 pi. Price $1. 



XXXIV. The Glacial Gravels of Maine and their Assoriated Deposits, by George H. Stone. IS'.m. 

 4- xiii, 499pp. 52 pi. Price $1.30. 



XXXV. The Later Extinct Floras of North America, by John Strong Newberry; edited b\ 

 Arthur Hollick. 1898. 4'-. xviii, 295 pp. 68 pi. Price $1.25. 



XXXVI. The Crystal Falls Iron-Hearing District of Michigan, by J. Morgan demerits and 

 Henry Lloyd Smyth ; with a Chapter on the Sturgeon River Tongue, by William Shirley I'.ayley, and an 

 introduction by Charles Richard Van Hise. 1899. 4. xxxvi, 512 pp. 53 pi. Price $2. 



XXXVII. Fossil Mora of the Lower Coal Measures of Missouri, by David White. 1899. 4. 

 xi, 467 pp. 73 pi. Price $1.25. 



XXXVIII. The Illinois Glacial Lobe, by Frank Leverett. 1899. 4. xxi, 817 pp. 21 pi. 

 Price $1.60. 



XXXIX. The Eocene and Lower Oligocene Coral Faunas of the United States, with Descriptions 

 of a Few Doubtfully Cretaceous Species, by T.Wayland Vanghan. 1900. 4-. 263pp. 24 pi. Price $1.10. 



XL. Adephagous and Clavicorn Coleoptera from the Tertiary Deposits at Florissant, Colo- 

 rado, with Descriptions of a Few Other Forms and a Systematic List of the Xon-Rhyucophorous 

 Tertiary Coleoptera of North America, by Samuel Hubbard Scndder. 1900. 4. 148 pp. 11 pi. 

 Price 80 cents 

 In preparation: 



Flora of the Laramie and Allied Formations, by Frank Hall Knowlton. 



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1. Ou Hypersthene-Aiulesite and on Tricliuic Pyroxene in Augitic Rocks, by Whitman Cross, 

 with a Geological Sketch of Buffalo Peaks, Colorado, by S. !'. F.IMIMMII^. iss:i. s . 12 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. 8pp. Price 5 cents. 



3. On the Fossil Faunas of the Upper Devonian, along the Meridian of 7(3 30', from Tompkins 

 County, N. Y., to Bradford County, Pa., by Henry S. Williams. 1884. 8. 36pp. Price, 5 cents. 



4. Ou Mesozoic Fossils, by Charles A. White. 1884. 8. 36pp. 9 pi. Price ."> cents. 



5. A Dictionary of Altitudes in the United States, compiled by Henry Gannett. 1884. S'-. ''-'' 

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i>. Elevations in the Dominion of Canada, by . I. W. Spencer. 18X4. 8. 43pp. Price 5 cunts. 



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 Helknap Marcou. 

 1884. 8-. 184pp. Price 10 cents. 



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

 C. R. Van Hise. 1884'. 8'. 56pp. 6 pi. Price 10 cents. 



9. A Report of Work done in the Washington Laboratory during the Fiscal Year 1883-'84. F. \V. 

 Clarke, Chief Chemist; T.M.Chatard, Assistant Chemist. 188_4. 8. 40pp. Price 5 cents. 



10. On the Cambrian Faunas of North America. Preliminary Studies, by Charles Doolittle 

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11. On the Quaternary and Recent Mollusca of the Great Basin; with Description of New 

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 by G.K.Gilbert. 1884. 8". 66 pp. (i pi. ' Price 5 cents. 



12. A Crystallographic Study of the Thiuolite of Lake Lahontan. by Edward S. Dana,. 1884. u . 

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13. Boundaries of the United States and of tin- Several States and Territories, with a Historical 

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14. The Electrical and Magnetic Properties of the Iron-Carburets, by Carl Barus and Vincent 

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15. Ou the Mesozoie and Cenozoic Paleontology of California., by Charles A. White. 1885. 8. 

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16. Ou the Higher Devonian Faunas of Ontario County, New York, by John M.Clarke. 1885. 8. 

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

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18. On Marine Eocene, Fresh-Water Miocene, and other Fossil Mollusca, of Western North 

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19. N'otes on the Stratigraphy of California, by George F. Becker. 1885. 8-. 28pp. Priceocents. 



20. Contributions to the Mineralogy of the Rocky Mountains, by Whitman ( 'ross and W. F. Hille- 

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21. The Lignites ol the (ire.it Sioux Reservation; a Report on the Region between the Grand 

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22. On New Cretaceous Fossils from California, by Charles A. White. 1X85. 8 1 -. 25pp. 5 pi. 

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