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    Features

    China Modernizes

    By William S. Shipley

    British Motor-Lifeboats Are Highly Successful

    Insect Warriors Battle For The Movies

    By Stacy Woodard

    Tribulations Of The Tropical Astronomer

    By Henry Norris Russell

    Working and Thinking and Eating

    Modern Architecture in Germany

    Why The New Naval Building Program Is Necessary

    By Henry L. Roosevelt

    The Amateur And His Microscope—X Mounting Specimens

    By John F. Brandt

    How Not To Swim Faster

    By Peter V. Karpovich

    Business Flies At Higher Speeds

    By Reginald M. Cleveland

    Refrigerator To Cool Boulder Dam Concrete

    Sundials And Their Construction—III

    The Construction of North, East, and West-Facing Dials, and Polar Dials

    By R. Newton Mayall and Margaret Walton Mayall

    Departments

    • Our Point Of View, April 1934

    • Departments

      Across The Editor's Desk, April 1934

    • Humerus, Humerus, Femur, Of Mammoth

    • Talkies in a Suit Case, Machine Welds Beer Barrels and more

    • Streamlined Motor Vehicles, Denmark Reciprocal Copyright Relations With U. S.

    • Books Selected By The Editors, April 1934

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