Table of Contents

May 1886; Volume s3-31,Issue 185

Igneous and metamorphic petrology

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The columnar structure in the igneous rock on Orange Mountain, New Jersey
Joseph Paxson Iddings

American Journal of Science May 1886, s3-31 (185) 321-331; DOI: https://doi.org/10.2475/ajs.s3-31.185.321
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Cretaceous metamorphic rocks of California
George Ferdinand Becker

American Journal of Science May 1886, s3-31 (185) 348-357; DOI: https://doi.org/10.2475/ajs.s3-31.185.348

Invertebrate paleontology

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Larval theory of the origin of tissue
A. Hyatt

American Journal of Science May 1886, s3-31 (185) 332-347; DOI: https://doi.org/10.2475/ajs.s3-31.185.332

Quaternary geology

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Arnold Guyot
James D. Dana

American Journal of Science May 1886, s3-31 (185) 358-370; DOI: https://doi.org/10.2475/ajs.s3-31.185.358

Paleobotany

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On the determination of fossil dicotyledonous leaves
Lester Frank Ward

American Journal of Science May 1886, s3-31 (185) 370-375; DOI: https://doi.org/10.2475/ajs.s3-31.185.370

Mineralogy

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Pseudomorphs of limonite after pyrite
Erastus Gilbert Smith

American Journal of Science May 1886, s3-31 (185) 376-377; DOI: https://doi.org/10.2475/ajs.s3-31.185.376
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Brookite from Magnet Cove, Arkansas
Samuel Lewis Penfield

American Journal of Science May 1886, s3-31 (185) 387-389; DOI: https://doi.org/10.2475/ajs.s3-31.185.387

Miscellaneous

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Influence of motion of the medium on the velocity of light
A. A. Michelson and E. W. Morley

American Journal of Science May 1886, s3-31 (185) 377-385; DOI: https://doi.org/10.2475/ajs.s3-31.185.377

General geochemistry

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Note on the structure of tempered steel
C. Barus and V. Strouhal

American Journal of Science May 1886, s3-31 (185) 386; DOI: https://doi.org/10.2475/ajs.s3-31.185.386