Table of Contents

December 1876; Volume s3-12,Issue 72

Applied geophysics

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Experiments on the nature of the force involved in Crookes' radiometer
Ogden N. Rood

American Journal of Science December 1876, s3-12 (72) 405-411; DOI: https://doi.org/10.2475/ajs.s3-12.72.405
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Experiments on the sympathetic resonance of tuning forks
Robert Spice

American Journal of Science December 1876, s3-12 (72) 411-413; DOI: https://doi.org/10.2475/ajs.s3-12.72.411

Structural geology

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Types of orographic structure
John Wesley Powell

American Journal of Science December 1876, s3-12 (72) 414-428; DOI: https://doi.org/10.2475/ajs.s3-12.72.414

General geochemistry

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On the ethers of uric acid; contributions from the Chemical Laboratory of Harvard College
H. B. Hill

American Journal of Science December 1876, s3-12 (72) 428-438; DOI: https://doi.org/10.2475/ajs.s3-12.72.428

Igneous and metamorphic petrology

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Notice of a meteorite from Madison County, North Carolina
Beverly S. Burton

American Journal of Science December 1876, s3-12 (72) 439; DOI: https://doi.org/10.2475/ajs.s3-12.72.439

Vertebrate paleontology

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On a recent discovery of Carboniferous batrachians in Nova Scotia
John William Dawson

American Journal of Science December 1876, s3-12 (72) 440-447; DOI: https://doi.org/10.2475/ajs.s3-12.72.440
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Principal characters of American pterodactyls
Othniel Charles Marsh

American Journal of Science December 1876, s3-12 (72) 479-480; DOI: https://doi.org/10.2475/ajs.s3-12.72.479

Mineralogy

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On the association of crystals of quartz and calcite in parallel position, as observed on a specimen from the Yellowstone Park
Edward Salisbury Dana

American Journal of Science December 1876, s3-12 (72) 448-451; DOI: https://doi.org/10.2475/ajs.s3-12.72.448