Table of Contents

Articles

• You have access

  The formation and distribution of fluviatile and marine gravels

  Herbert Ernest Gregory

  American Journal of Science May 1915, s4-39 (233) 487-508; DOI: https://doi.org/10.2475/ajs.s4-39.233.487
• You have access

  A Coal Measures amphibian with an osseous tarsus

  Roy Lee Moodie

  American Journal of Science May 1915, s4-39 (233) 509-512; DOI: https://doi.org/10.2475/ajs.s4-39.233.509
• You have access

  Contributions to Sardinian petrography; I, The rocks of Monte Ferru

  H. S. Washington

  American Journal of Science May 1915, s4-39 (233) 513-529; DOI: https://doi.org/10.2475/ajs.s4-39.233.513
• You have access

  Estimation of pentavalent vanadium by means of sodium thiosulphate

  G. O. Oberhelman

  American Journal of Science May 1915, s4-39 (233) 530-534; DOI: https://doi.org/10.2475/ajs.s4-39.233.530
• You have access

  The development of the mesenteries in the zooids of Anthozoa and its bearing upon the systematic position of the Rugosa

  Thomas Clachar Brown

  American Journal of Science May 1915, s4-39 (233) 535-542; DOI: https://doi.org/10.2475/ajs.s4-39.233.535
• You have access

  The use of the Roentgen ray in paleontology; skiagraphy of fossils

  Richard Montgomery Field

  American Journal of Science May 1915, s4-39 (233) 543-550; DOI: https://doi.org/10.2475/ajs.s4-39.233.543
• You have access

  A new Ordovician eurypterid

  Ellis W. Shuler

  American Journal of Science May 1915, s4-39 (233) 551-554; DOI: https://doi.org/10.2475/ajs.s4-39.233.551
• You have access

  A new mosasaur from the Fort Pierre

  Frederic Brewster Loomis

  American Journal of Science May 1915, s4-39 (233) 555-566; DOI: https://doi.org/10.2475/ajs.s4-39.233.555
• You have access

  Growing crystals for measurement

  John Marcus Blake

  American Journal of Science May 1915, s4-39 (233) 567-570; DOI: https://doi.org/10.2475/ajs.s4-39.233.567
• You have access

  The primary analcite of the Crowsnest volcanics

  John David MacKenzie

  American Journal of Science May 1915, s4-39 (233) 571-574; DOI: https://doi.org/10.2475/ajs.s4-39.233.571
• You have access

  New genera of Permian reptiles

  Samuel Wendell Williston

  American Journal of Science May 1915, s4-39 (233) 575-579; DOI: https://doi.org/10.2475/ajs.s4-39.233.575
• You have access

  Radium content of water from the Gulf of Mexico

  S. J. Lloyd

  American Journal of Science May 1915, s4-39 (233) 580-582; DOI: https://doi.org/10.2475/ajs.s4-39.233.580
• You have access

  Mobilities of ions in air

  E. M. Wellisch

  American Journal of Science May 1915, s4-39 (233) 583-599; DOI: https://doi.org/10.2475/ajs.s4-39.233.583