Table of Contents

Articles

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  Triassic deposits of the Durham Basin and their relation to other Triassic areas of eastern United States

  William Frederick Prouty

  American Journal of Science June 1931, s5-21 (126) 473-490; DOI: https://doi.org/10.2475/ajs.s5-21.126.473
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  Mineralogical petrography of Pacific lavas; Part II

  T. F. W. Barth

  American Journal of Science June 1931, s5-21 (126) 491-530; DOI: https://doi.org/10.2475/ajs.s5-21.126.491
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  The evolution of the class Insecta

  Frank Morton Carpenter, Percy Edward Raymond and Alexander Petrunkevitch

  American Journal of Science June 1931, s5-21 (126) 531-539; DOI: https://doi.org/10.2475/ajs.s5-21.126.531