Table of Contents

February 1890; Volume s3-39,Issue 230

Applied geophysics

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The magnetic field in the Jefferson Physical Laboratory
R. W. Willson

American Journal of Science February 1890, s3-39 (230) 87-93; DOI: https://doi.org/10.2475/ajs.s3-39.230.87

Paleobotany

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On Cretaceous plants from Marthas Vineyard
Charles David White

American Journal of Science February 1890, s3-39 (230) 93-101; DOI: https://doi.org/10.2475/ajs.s3-39.230.93

Stratigraphy

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A review of Dr. R. W. Ells's second report on the geology of a portion of the Province of Quebec, with additional notes on the Quebec Group
C. D. Walcott

American Journal of Science February 1890, s3-39 (230) 101-115; DOI: https://doi.org/10.2475/ajs.s3-39.230.101

Extraterrestrial geology

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Measurement by light waves
A. A. Michelson

American Journal of Science February 1890, s3-39 (230) 115-121; DOI: https://doi.org/10.2475/ajs.s3-39.230.115

Mineralogy

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On Lansfordite, nesquehonite, a new mineral, and pseudomorphs of nesquehonite after lansfordite
Frederick Augustus Genth and S. L. Penfield

American Journal of Science February 1890, s3-39 (230) 121-137; DOI: https://doi.org/10.2475/ajs.s3-39.230.121

Miscellaneous

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Weber's law of thermal radiation
W. Ferrel

American Journal of Science February 1890, s3-39 (230) 137-145; DOI: https://doi.org/10.2475/ajs.s3-39.230.137

General paleontology

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Tracks of organic origin in rocks of the Animikie group
Alfred Richard Cecil Selwyn

American Journal of Science February 1890, s3-39 (230) 145-147; DOI: https://doi.org/10.2475/ajs.s3-39.230.145