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The Problem of the Hudson River how the Model Experimental Basin and the Moving Picture Machine Solved it, Once More the Anti-vivisectionists, and more

By Robert G. Skerrett

The Problem of Our Navy- May 2, 1914

X.--Making the Navy an Economic Asset

By Josephus Daniels

The Guns of Panama

The Powerful Defenses at the Terminals of the Canal

By Charles M. Maigne

The Defense of the "America's" Cup

Construction, Sail Plans and Leading Characteristics of the Three Cup Defenders of 1914

Curiosities of Science and Invention- May 2, 1914

The Marvels of Ultra-violet Radiation, Protective Coatings for Objects made of Plaster of Paris

By Richard Arapu

Exploding Mines by Wireless Telegraphy, A New Experiment to Determine the Earth's Rigidity

By Charles Forbes

Arrangement of Wires in Multiple-unit Trains

By Samuel W. Balch

Notes for Inventors - May 2, 1914

Dr. Hertoghe on Thyroid Deficiency, John Henry Poynting, and more

Sound Perception v. Deafness, Door Bells and Alarm Clocks, and more

By Stanley Robinson

Insects in the Upper Air


  • Letters

    Correspondence- May 2, 1914

  • Recommended

    New Books, Etc.- May 2, 1914

  • Departments

    The Heavens in May

  • Recently Patented Inventions- May 2, 1914

  • Notes and Queries- May 2, 1914

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