historical geology

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Remarks on the Mesozoic red sandstone of the Atlantic Slope and notice of the discovery of a bone bed therein, at Phoenixville, Pennsylvania
Charles M. Wheatley

American Journal of Science July 1861, s2-32 (94) 41-48; DOI: https://doi.org/10.2475/ajs.s2-32.94.41
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On the conversion of certain conglomerates into talcose and micaceous schists and gneiss, by the elongation, flattening, and metamorphosis of the pebbles and the cement
Edward Hitchcock

American Journal of Science May 1861, s2-31 (93) 372-392; DOI: https://doi.org/10.2475/ajs.s2-31.93.372
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The Upper Silurian beds of western Tennessee
James Merrill Safford

American Journal of Science March 1861, s2-31 (92) 205-209; DOI: https://doi.org/10.2475/ajs.s2-31.92.205

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