Table of Contents

Articles

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  Early Tertiary marine faunas and continental drift

  John Wyatt Durham

  American Journal of Science May 1952, 250 (5) 321-343; DOI: https://doi.org/10.2475/ajs.250.5.321
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  Freshwater molluscan fauna from an Upper Cretaceous porcellanite near Sage Junction, Wyoming

  Teng-Chien Yen

  American Journal of Science May 1952, 250 (5) 344-359; DOI: https://doi.org/10.2475/ajs.250.5.344
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  Average chemical composition of the sedimentary rocks

  Zbigniew Leliwa Sujkowski

  American Journal of Science May 1952, 250 (5) 360-374; DOI: https://doi.org/10.2475/ajs.250.5.360
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  Form of diabase sheets in southeastern Pennsylvania

  Preston Enslow Hotz

  American Journal of Science May 1952, 250 (5) 375-388; DOI: https://doi.org/10.2475/ajs.250.5.375