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THE JOURNAL OF GEOLOGY.
    • The Grand Gulf Formation of the Gulf States.4 pp., Ill. (213-216).—Am. Jour. Sci., Vol. XXXVIII, Sept., 1889.
    • The Chattahoochee Embayment.5 pp. (128-132).—Bull. Geol. Soc. Am., Vol. III, 1891.
    • The Nita Crevasse.5 pp. (120-125). Ill.—Bull. Geol. Soc. Am., Vol. II.
  • Hallock, W.
    • Report of Committee on Rate of Increase Downward of Underground Temperature.3 pp., with table.—Brit. Assoc. Ad. Sc., 1892.
  • Kerr, W. C. (and Geo. B. Hanna).
    • Ores of North Carolina.235 pp. (125-359), 27 pl., geol. map and numerous cuts.—Geol. of North Carolina, Vol. II, Chap. II, 1888.
  • Keyes, Charles R.
    • Lower Carbonic Gasteropoda from Burlington, Iowa. The American Species of Polyphemopsis. Sphaerodoma: A Genus of Fossil Gasteropods.126 pp. 283-309).—Proc. Acad. Nat. Sci. of Philadelphia, Sept. 24, 1889.
    • The Principal Mississippian Section.18 pp. (283-300), 9 pl., Vol. III.—Bull. Geol. Soc., Am., June, 1892.
    • On the Fauna of the Lower Coal Measures of Central Iowa, and Descriptions of Two New Fossils from the Devonian of Iowa.27 pp., 1 pl.—Proc. Acad. Nat. Sci., Philadelphia, July 31, 1888.
    • The Redrock Sandstone of Marion County, Iowa.4 pp. (273-276), Ill.—Am. Jour. Sci., Vol. XLI, April, 1891.
    • Surface Geology of Burlington, Iowa.6 pp. (1049-1054).—Am. Naturalist, Vol. XXII, Dec., 1888.
    • The Coal Measures of Central Iowa, and Particularly in the Vicinity of Des Moines.9 pp. (396-404), Ill.—Am. Geol., Dec. 1888.
    • Genesis of the Actnocrinidæ.12 pp. (243-254), 3 pl.—Am. Naturalist, March, 1890.
    • The Sedimentary Habits of Platyceras.4 pp. (269-272).—Am. Jour. Sci., Vol. XXXVI, Oct. 1888.
    • Discovery of Fossils in the Limestones of Frederick County, Maryland.3 pp., Ill.—Johns Hopkins University Circulars, No. 83.
    • On Some Fossils from the Lower Coal Measures at Des Moines, Iowa.6 pp. (23-28).—Am. Geol., July, 1888.
    • On the Attachment of Platyceras to Palæocrinoids, and its Effects in Modifying the Form of the Shell.13 pp., 1 pl.—Proc. Amer. Philos. Soc., Vol. XXV, No. 128, Oct. 1888.
    • Synopsis of American Carbonic Calyptræidæ.32 pp. (150-181), 1 pl., 1 table.—Proc. Acad. Nat. Sci., Philadelphia, 1890.
    • Review of the Progress of American Invertebrate Palæontology for the year 1890.7 pp. (327-333).—Am. Nat., April, 1891.
    • The Naticoid Genus Strophostylus.7 pp., 1 pl.—Am. Nat., Dec. 1890.
    • Review of the Progress of American Invertebrate Palæontology for the year 1889.8 pp. (131-138).—Am. Nat., Feb. 1890.
    • The Petrography and Structure of the Piedmont Plateau in Maryland, by George Huntington Williams, of Johns Hopkins University, with a Supplement on a Geological Section Across the Piedmont Plateau in Maryland.22 pp. (301-322), 1 pl., Ill.—Bull. Geol. Soc. Am., Vol. II, March, 1891.
    • Stratigraphy of the Carboniferous in Central Iowa.16 pp. (277-292), 2 pl.—Bull. Geol. Soc., Am., Vol. II, March, 1891.
    • An Annotated Catalogue of the Mollusca of Iowa.23 pp.—Bull. Essex Inst., Vol. XX, 1889.
    • Fossil Faunas in Central Iowa.24 pp. (242-265).—Proc. Acad. Nat. Sci., Philadelphia, April 28, 1891.
    • Remarks on the Perisomic Plates of the Crinoids.2 pp.
    • Soleniscus: Its Generic Characters and Relations.5 pp. (420-424), 1 pl.—Am. Nat., May, 1889.
    • Proposed Economical Geological Survey of Iowa.6 pp.—Iowa State Register, July 12, 1891.
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