Table of Contents

April 1878; Volume s3-15,Issue 88

Quaternary geology

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On the surface geology of southwest Pennsylvania and adjoining portions of Maryland and West Virginia
John James Stevenson

American Journal of Science April 1878, s3-15 (88) 245-250; DOI: https://doi.org/10.2475/ajs.s3-15.88.245
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On the driftless interior of North America
James Dwight Dana

American Journal of Science April 1878, s3-15 (88) 250-255; DOI: https://doi.org/10.2475/ajs.s3-15.88.250

Geomorphology

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The ancient outlet of Great Salt Lake
Grove Karl Gilbert

American Journal of Science April 1878, s3-15 (88) 256-259; DOI: https://doi.org/10.2475/ajs.s3-15.88.256

Paleobotany

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Projection of microscope photographs
J. C. Draper

American Journal of Science April 1878, s3-15 (88) 259-261; DOI: https://doi.org/10.2475/ajs.s3-15.88.259
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On the occurrence of a tree-like fossil plant, Glyptodendron, in the Upper Silurian (Clinton) rocks of Ohio
Edward Waller Claypole

American Journal of Science April 1878, s3-15 (88) 302-304; DOI: https://doi.org/10.2475/ajs.s3-15.88.302

Invertebrate paleontology

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On the discovery of Lower Silurian fossils in limestone associated with hydromica slates, and on other points in the geology of Lehigh and Northampton counties, eastern Pennsylvania
F. Prime

American Journal of Science April 1878, s3-15 (88) 261-269; DOI: https://doi.org/10.2475/ajs.s3-15.88.261

General geophysics

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On the influence of temperature on the optical constants of glass
C. S. Hastings

American Journal of Science April 1878, s3-15 (88) 269-275; DOI: https://doi.org/10.2475/ajs.s3-15.88.269

Solid-earth geophysics

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A note on experiments with floating magnets, showing the motions and arrangements in a plane of freely moving bodies, acted on by forces of attraction and repulsion; and serving in the study of the directions and motions of the lines of magnetic force
A. M. Mayer

American Journal of Science April 1878, s3-15 (88) 276-277; DOI: https://doi.org/10.2475/ajs.s3-15.88.276

Stratigraphy

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On the intrusive nature of the Triassic trap sheets of New Jersey
Israel Cook Russell

American Journal of Science April 1878, s3-15 (88) 277-280; DOI: https://doi.org/10.2475/ajs.s3-15.88.277

Applied geophysics

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Research on the absolute unit of electrical resistance
H. A. Rowland

American Journal of Science April 1878, s3-15 (88) 281-291; DOI: https://doi.org/10.2475/ajs.s3-15.88.281

Extraterrestrial geology

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Croll's hypothesis of the origin of solar and sidereal heat
D. Kirkwood

American Journal of Science April 1878, s3-15 (88) 291-293; DOI: https://doi.org/10.2475/ajs.s3-15.88.291
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Janssen solar photograph and optical studies
S. P. Langley

American Journal of Science April 1878, s3-15 (88) 297-301; DOI: https://doi.org/10.2475/ajs.s3-15.88.297

Mineralogy

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On the chemical composition of guanajuatite, or selenide of bismuth, from Guanajuato, Mex
John William Mallet

American Journal of Science April 1878, s3-15 (88) 294-296; DOI: https://doi.org/10.2475/ajs.s3-15.88.294