Table of Contents

June 1893; Volume s3-45,Issue 270

General geochemistry

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Electro-chemical effects due to magnetization
G. O. Squier

American Journal of Science June 1893, s3-45 (270) 443-458; DOI: https://doi.org/10.2475/ajs.s3-45.270.443
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On the treatment of barium sulphate in analysis
J. L. Phinney

American Journal of Science June 1893, s3-45 (270) 468-472; DOI: https://doi.org/10.2475/ajs.s3-45.270.468
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On the nature of certain solutions and on a new means of investigating them
M. Carey Lea

American Journal of Science June 1893, s3-45 (270) 478-487; DOI: https://doi.org/10.2475/ajs.s3-45.270.478

Economic geology, geology of ore deposits

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Electro-chemical effects due to magnetization
G. O. Squier

American Journal of Science June 1893, s3-45 (270) 443-458; DOI: https://doi.org/10.2475/ajs.s3-45.270.443

Quaternary geology

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Nikitin on the Quaternary deposits of Russia and their relations to prehistoric man
A. A. Wright

American Journal of Science June 1893, s3-45 (270) 459-463; DOI: https://doi.org/10.2475/ajs.s3-45.270.459

Solid-earth geophysics

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Rigidity not to be relied upon in estimating the Earth's age
O. Fisher

American Journal of Science June 1893, s3-45 (270) 464-468; DOI: https://doi.org/10.2475/ajs.s3-45.270.464

Stratigraphy

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The validity of the so-called Wallala beds as a division of the California Cretaceous
Harold Wellman Fairbanks

American Journal of Science June 1893, s3-45 (270) 473-478; DOI: https://doi.org/10.2475/ajs.s3-45.270.473

Mineralogy

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Mineralogical notes
Alfred Joseph Moses

American Journal of Science June 1893, s3-45 (270) 488-492; DOI: https://doi.org/10.2475/ajs.s3-45.270.488
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On pentlandite from Sudbury, Ont., Can., with remarks upon three supposed new species from the same region
Samuel Lewis Penfield

American Journal of Science June 1893, s3-45 (270) 493-497; DOI: https://doi.org/10.2475/ajs.s3-45.270.493

Economic geology of nonmetal deposits

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Notes on the geology of Florida; two of the lesser, but typical phosphate fields
Lawrence Clement Johnson

American Journal of Science June 1893, s3-45 (270) 497-503; DOI: https://doi.org/10.2475/ajs.s3-45.270.497

Miscellaneous

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Electrical oscillations of low frequency and their resonance
M. I. Pupin

American Journal of Science June 1893, s3-45 (270) 503-520; DOI: https://doi.org/10.2475/ajs.s3-45.270.503