Table of Contents

April 1874; Volume s3-7,Issue 40

Igneous and metamorphic petrology

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On the great lava-flood of the Northwest and on the structure and age of the Cascade Mountains
Joseph LeConte

American Journal of Science April 1874, s3-7 (40) 259-366; DOI: https://doi.org/10.2475/ajs.s3-7.40.259
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On a mass of meteoric iron of Howard County, Indiana.
John Lawrence Smith

American Journal of Science April 1874, s3-7 (40) 391-395; DOI: https://doi.org/10.2475/ajs.s3-7.40.391

Economic geology of energy sources

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On the parallelism of coal seams
John Strong Newberry

American Journal of Science April 1874, s3-7 (40) 367-369; DOI: https://doi.org/10.2475/ajs.s3-7.40.367
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On the lignites and plant beds of western America
John Strong Newberry

American Journal of Science April 1874, s3-7 (40) 399-404; DOI: https://doi.org/10.2475/ajs.s3-7.40.399

General paleontology

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Notes on some of the fossils figured in the recently issued fifth volume of the Illinois State geological report
F. B. Meek

American Journal of Science April 1874, s3-7 (40) 369-375; DOI: https://doi.org/10.2475/ajs.s3-7.40.369

Miscellaneous

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Laboratory notes
M. Carey Lea

American Journal of Science April 1874, s3-7 (40) 376-378; DOI: https://doi.org/10.2475/ajs.s3-7.40.376
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Results of recent dredging expeditions on the coast of New England; No. 6
A. E. Verrill

American Journal of Science April 1874, s3-7 (40) 405-413; DOI: https://doi.org/10.2475/ajs.s3-7.40.405

Economic geology of ore deposits

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The auriferous gravel deposit of Gold Bluffs [Klamath County, California]
A. W. Chase

American Journal of Science April 1874, s3-7 (40) 379-384; DOI: https://doi.org/10.2475/ajs.s3-7.40.379

Seismology

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Notices of recent earthquakes; No. 4
C. G. Rockwood

American Journal of Science April 1874, s3-7 (40) 384-387; DOI: https://doi.org/10.2475/ajs.s3-7.40.384

Areal geology

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Geographical and geological explorations and surveys west of the 100th meridian
George Montague Wheeler

American Journal of Science April 1874, s3-7 (40) 388-391; DOI: https://doi.org/10.2475/ajs.s3-7.40.388

Stratigraphy

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On the Hamilton in Ohio
Newton Horace Winchell

American Journal of Science April 1874, s3-7 (40) 395-398; DOI: https://doi.org/10.2475/ajs.s3-7.40.395