Table of Contents

Articles

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  Louis Valentine Pirsson

  Cross

  American Journal of Science September 1920, s4-50 (297) 173-187; DOI: https://doi.org/10.2475/ajs.s4-50.297.173
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  Origin of rock tanks and charcos

  Kirk Bryan

  American Journal of Science September 1920, s4-50 (297) 188-206; DOI: https://doi.org/10.2475/ajs.s4-50.297.188
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  New species of Oligocene (White River) Felidae

  Malcolm Rutherford Thorpe

  American Journal of Science September 1920, s4-50 (297) 207-224; DOI: https://doi.org/10.2475/ajs.s4-50.297.207
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  Some minerals of the melanterite and chalcanthite groups with optical data on the hydrous sulphates of manganese and cobalt

  Esper Signius Larsen and M. L. Glenn

  American Journal of Science September 1920, s4-50 (297) 225-233; DOI: https://doi.org/10.2475/ajs.s4-50.297.225
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  An upper Carboniferous footprint from Attleboro, Massachusetts

  Richard Swann Lull

  American Journal of Science September 1920, s4-50 (297) 234-236; DOI: https://doi.org/10.2475/ajs.s4-50.297.234