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Table of Contents

September 1890; Volume s3-40,Issue 237

Geologic maps

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    Rocky Mountain protaxis and the post-Cretaceous mountain-making along its course
    James Dwight Dana
    American Journal of Science September 1890, s3-40 (237) 181-196; DOI: https://doi.org/10.2475/ajs.s3-40.237.181

Economic geology, economics of energy sources

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    The magneto-optical generation of electricity
    Samuel Sheldon
    American Journal of Science September 1890, s3-40 (237) 196-198; DOI: https://doi.org/10.2475/ajs.s3-40.237.196

Mineralogy

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    Crystallographic notes
    Samuel Lewis Penfield
    American Journal of Science September 1890, s3-40 (237) 199-207; DOI: https://doi.org/10.2475/ajs.s3-40.237.199
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    Chalcopyrite crystals from the French Creek iron mines, Saint Peter, Chester County, Pennsylvania
    Samuel Lewis Penfield
    American Journal of Science September 1890, s3-40 (237) 207-211; DOI: https://doi.org/10.2475/ajs.s3-40.237.207
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    On mordenite
    Louis Valentine Pirsson
    American Journal of Science September 1890, s3-40 (237) 232-237; DOI: https://doi.org/10.2475/ajs.s3-40.237.232

Invertebrate paleontology

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    Koninckina and related genera
    Charles Emerson Beecher
    American Journal of Science September 1890, s3-40 (237) 211-219; DOI: https://doi.org/10.2475/ajs.s3-40.237.211
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    On Leptaenisca, a new genus of brachiopod from the lower Helderberg group
    Charles Emerson Beecher
    American Journal of Science September 1890, s3-40 (237) 238-240; DOI: https://doi.org/10.2475/ajs.s3-40.237.238
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    North American species of Strophalosia.
    Charles Emerson Beecher
    American Journal of Science September 1890, s3-40 (237) 240-246; DOI: https://doi.org/10.2475/ajs.s3-40.237.240

Applied geophysics

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    The effect of pressure on the electrical conductivity of liquids
    C. Barus
    American Journal of Science September 1890, s3-40 (237) 219-222; DOI: https://doi.org/10.2475/ajs.s3-40.237.219

Igneous and metamorphic petrology

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    Notice of two new iron meteorites from Hamilton County, Texas, and Puquios, Chili, S. A
    Edwin Eugene Howell
    American Journal of Science September 1890, s3-40 (237) 223-226; DOI: https://doi.org/10.2475/ajs.s3-40.237.223

Stratigraphy

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    The Cretaceous of Manitoba
    Joseph Burr Tyrrell
    American Journal of Science September 1890, s3-40 (237) 227-232; DOI: https://doi.org/10.2475/ajs.s3-40.237.227

Areal geology

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    Geology of Mon Louis Island, Mobile Bay
    Daniel W. Langdon
    American Journal of Science September 1890, s3-40 (237) 237-238; DOI: https://doi.org/10.2475/ajs.s3-40.237.237

Sedimentary petrology

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    Notes on the microscopic structure of oolite, with analyses
    Erwin Hinckley Barbour and J. Torrey
    American Journal of Science September 1890, s3-40 (237) 246-249; DOI: https://doi.org/10.2475/ajs.s3-40.237.246
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American Journal of Science
Vol. s3-40, Issue 237
September 1890
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  • Geologic maps
  • Economic geology, economics of energy sources
  • Mineralogy
  • Invertebrate paleontology
  • Applied geophysics
  • Igneous and metamorphic petrology
  • Stratigraphy
  • Areal geology
  • Sedimentary petrology
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