Table of Contents

January 1891; Volume s3-41,Issue 241

Miscellaneous

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Alternating electric arc between a ball and point
E. L. Nichols

American Journal of Science January 1891, s3-41 (241) 1-11; DOI: https://doi.org/10.2475/ajs.s3-41.241.1
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Decimal system of measures of the seventeenth century
J. H. Gore

American Journal of Science January 1891, s3-41 (241) 22-28; DOI: https://doi.org/10.2475/ajs.s3-41.241.22
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Illuminating power of flat petroleum flames in various azimuths
A. M. Mayer

American Journal of Science January 1891, s3-41 (241) 52-54; DOI: https://doi.org/10.2475/ajs.s3-41.241.52
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Physical properties of hard rubber, or vulcanite
A. M. Mayer

American Journal of Science January 1891, s3-41 (241) 54-60; DOI: https://doi.org/10.2475/ajs.s3-41.241.54

Structural geology

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Deformation of the Algonquin beach, and birth of Lake Huron
Joseph William Winthrop Spencer

American Journal of Science January 1891, s3-41 (241) 12-21; DOI: https://doi.org/10.2475/ajs.s3-41.241.12

Economic geology of ore deposits

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On the Clinton oolitic iron ores
August Frederick Foerste

American Journal of Science January 1891, s3-41 (241) 28-29; DOI: https://doi.org/10.2475/ajs.s3-41.241.28

Quaternary geology

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Effects of pressure on ice
R. W. Wood

American Journal of Science January 1891, s3-41 (241) 30-33; DOI: https://doi.org/10.2475/ajs.s3-41.241.30
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A review of the Quaternary era, with special reference to the deposits of flooded rivers
Warren Upham

American Journal of Science January 1891, s3-41 (241) 33-52; DOI: https://doi.org/10.2475/ajs.s3-41.241.33

Mineralogy

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On some remarkably developed calcite crystals
Louis Valentine Pirsson

American Journal of Science January 1891, s3-41 (241) 61-64; DOI: https://doi.org/10.2475/ajs.s3-41.241.61

Vertebrate paleontology

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A horned artiodactyle (Protoceras celer) from the Miocene
Othniel Charles Marsh

American Journal of Science January 1891, s3-41 (241) 81-82; DOI: https://doi.org/10.2475/ajs.s3-41.241.81