American Journal of Science: s3-41 (245)

May 1891; Volume s3-41,Issue 245

Stratigraphy

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On the relationship of the Pleistocene to the pre-Pleistocene formations of the Mississippi Basin, south of the limit of glaciation
Thomas Chrowder Chamberlin and R. D. Salisbury

American Journal of Science May 1891, s3-41 (245) 359-377; DOI: https://doi.org/10.2475/ajs.s3-41.245.359
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Geological age of the Saganaga syenite
Horace Vaughan Winchell

American Journal of Science May 1891, s3-41 (245) 386-390; DOI: https://doi.org/10.2475/ajs.s3-41.245.386

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Measures of the intensity of solar radiation
William Ferrel

American Journal of Science May 1891, s3-41 (245) 378-386; DOI: https://doi.org/10.2475/ajs.s3-41.245.378
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Self-feeding Sprengel pump
H. L. Wells

American Journal of Science May 1891, s3-41 (245) 390-394; DOI: https://doi.org/10.2475/ajs.s3-41.245.390
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Certain peculiarities in the behavior of a galvanometer when used with the thermopile
E. Merritt

American Journal of Science May 1891, s3-41 (245) 417-423; DOI: https://doi.org/10.2475/ajs.s3-41.245.417

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Contributions to mineralogy; 50
F. A. Genth

American Journal of Science May 1891, s3-41 (245) 394-400; DOI: https://doi.org/10.2475/ajs.s3-41.245.394

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Contributions to mineralogy, No. 51
F. A. Genth

American Journal of Science May 1891, s3-41 (245) 401-403; DOI: https://doi.org/10.2475/ajs.s3-41.245.401

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Columbite of the Black Hills, South Dakota
William Phipps Blake

American Journal of Science May 1891, s3-41 (245) 403-405; DOI: https://doi.org/10.2475/ajs.s3-41.245.403
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A new phosphate from the Black Hills of South Dakota
William Parker Headden

American Journal of Science May 1891, s3-41 (245) 415-417; DOI: https://doi.org/10.2475/ajs.s3-41.245.415
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Supplementary notice on the polycrase of North and South Carolina
William Earl Hidden and J. B. Mackintosh

American Journal of Science May 1891, s3-41 (245) 423-425; DOI: https://doi.org/10.2475/ajs.s3-41.245.423

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The raised reefs of Fernando de Noronha
H. N. Ridley

American Journal of Science May 1891, s3-41 (245) 406-409; DOI: https://doi.org/10.2475/ajs.s3-41.245.406

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The cause of active compressive stress in rocks and recent rock flexures
Thomas Mellard Reade

American Journal of Science May 1891, s3-41 (245) 409-414; DOI: https://doi.org/10.2475/ajs.s3-41.245.409