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    Features

    A Button Industry from Ocean Pearl

    By Grace Lockhart

    Wild Life in a Fire

    By Duane H. Kipp

    Flying Instruction as it Should Be

    By George W. Orr

    Is Interstellar Space Wholly Empty

    By Henry Norris Russell

    A Day With a Locksmith

    By Albert A. Hopkins

    The Perspective of Modern Physics

    By Paul R. Heyl

    A Tinted Statue From Pompeii's Ashes

    It Pays to be a Pioneer

    By Milton Wright

    Natural Gasoline from Oil Wells

    By G. Ross Robertson

    Pose Yourself For Your Portrait

    Into a Hidden World

    By M. C. Swingle

    Asquith and Kitchener

    (Concluded from August)

    By W. D. Puleston

    "Form" Letters With A Personal Touch

    World Affairs and the Telephone

    How Ancient is Modern Man?

    By J. Reid Moir

    Cotton Cloth Fit for a King

    By Donald A. Laird

    Departments

    • How you are Influenced by Color

    • Departments

      Across the Editor's Desk, September 1931

    • Back of Frontispiece, September 1931

    • France's Reply to Germany's "Pocket Battleship"

    • Our Point of View, September 1931

    • New Soap has no Taste, A Telephone Call-Recorder and more

    • Single Court of Patent Appeals, Inventor Convicted of Fraud and more

    • Books Selected By The Editors, September 1931

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    September 1931

    See the World from a Different Perspective

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