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1-653 pp., 105 pi. and maps; i-v. 1-Stil ]>p., US pi. .-mil maps; i-x. 1-75U pp.. 102 pi. ami maps; i-xii 

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XIX. Nineteenth Annual Report of the United States Geological Survey, 1897-'98, Charles I'. 

 Walcott, Director. IS! is. i I'arts II, III, and V, 1899. ) S . 6 pt. in 7 vol. 422 pp., 2 maps; v, 958 

 pp., 172 pi. and maps; v, 7S5 pp., 99 pi. and maps; viii, 814 pp., IIS pi. and maps; xvii, 400 pp., 110 

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III. (ieology nl' the Comstoek Lode and tin- \Vashoe District, with Atlas, by George F. Keeker. 

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IV. Comstock Mining and Miners, by Eliot Lord. 1883. 4. xiv. (51 pp. 3 pi. Price $1.50. 



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XVIII. Gasteropoda and Cephalopoda of the Raritan Clays and Creensand Marls of New Jersey, 

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

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XXI. The Tertiary Rhynchophorous Coleoptera of the I'nited Statc-s, liy .Samuel llubliard Send- 

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XXII. A Manual of Topographic Methods, by Henry Gannett, Chief Topographer. 1893. 4. 



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XXIII. Geology of the.Green Mountains in Massachusetts, liv Kaphael Pumpellv, T. Nelson Dale, 

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XXIV. Molliisca and Cruslai-i-a of I In- Miocene Format ions ut' New Jersey, by Robert Parr Wh it- 

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XXVII. (i colony of the Denver liasin in Colorado, by Samuel Franklin Emmons, Whitman Cross, 

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XX \ III. The Mari|iictlc' Iron -I lea ring I list rid of Michigan, with Atlas, by C. R. Van Hise and 

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\.\l.\. Geology of Old llamjishire County. Massachusetts, comprising Franklin. Hampshire, and 

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\\\. I'oshil Medusa-, hy Charles Doolittle Walcott. 1S9S. I . ix, 201 )ip. 17 ]d. Price $1.50. 



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