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Table of Contents

August 1889; Volume s3-38,Issue 224

Miscellaneous

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    Observation of sudden phenomena
    S. P. Langley
    American Journal of Science August 1889, s3-38 (224) 93-99; DOI: https://doi.org/10.2475/ajs.s3-38.224.93
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    Spectro-photometric comparison of sources of artificial illumination
    Edward L. Nichols and William S. Franklin
    American Journal of Science August 1889, s3-38 (224) 100-114; DOI: https://doi.org/10.2475/ajs.s3-38.224.100
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    Action of light on allotropic silver
    M. Carey Lea
    American Journal of Science August 1889, s3-38 (224) 129; DOI: https://doi.org/10.2475/ajs.s3-38.224.129

Mineralogy

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    On the possibility of hemihedrism in the monoclinic crystal system, with especial reference to the hemihedrism of pyroxene
    George Huntington Williams
    American Journal of Science August 1889, s3-38 (224) 115-120; DOI: https://doi.org/10.2475/ajs.s3-38.224.115
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    A new occurrence of Gyrolite
    Frank Wigglesworth Clarke
    American Journal of Science August 1889, s3-38 (224) 128-129; DOI: https://doi.org/10.2475/ajs.s3-38.224.128

Stratigraphy

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    On the earlier Cretaceous rocks of the northwestern portion of the Dominion of Canada
    George Mercer Dawson
    American Journal of Science August 1889, s3-38 (224) 120-127; DOI: https://doi.org/10.2475/ajs.s3-38.224.120
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    On the great lava flows and intrusive trap sheets of the Newark system in New Jersey
    Nelson Horatio Darton
    American Journal of Science August 1889, s3-38 (224) 134-139; DOI: https://doi.org/10.2475/ajs.s3-38.224.134

Igneous and metamorphic petrology

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    On certain porphyrite bosses in northwestern New Jersey
    James Furman Kemp
    American Journal of Science August 1889, s3-38 (224) 130-134; DOI: https://doi.org/10.2475/ajs.s3-38.224.130

Invertebrate paleontology

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    Recent explorations in the Wappinger Valley limestones and other formations of Dutchess County, New York
    William Buck Dwight
    American Journal of Science August 1889, s3-38 (224) 139-153; DOI: https://doi.org/10.2475/ajs.s3-38.224.139

Geochemistry

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    Silicic acids
    George Ferdinand Becker
    American Journal of Science August 1889, s3-38 (224) 154-157; DOI: https://doi.org/10.2475/ajs.s3-38.224.154

Vertebrate paleontology

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    Notice of gigantic horned Dinosauria from the Cretaceous
    Othniel Charles Marsh
    American Journal of Science August 1889, s3-38 (224) 173-176; DOI: https://doi.org/10.2475/ajs.s3-38.224.173
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    Discovery of Cretaceous Mammalia; Part II
    O. C. Marsh
    American Journal of Science August 1889, s3-38 (224) 177-180; DOI: https://doi.org/10.2475/ajs.s3-38.224.177
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American Journal of Science
Vol. s3-38, Issue 224
August 1889
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