The Scientific American Aeronautic Trophy - p326

doi:10.1038/scientificamerican04201907-326

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Broken Rails and Railroad Accidents - p326

doi:10.1038/scientificamerican04201907-326a

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The Cruiser of the Future - p326

doi:10.1038/scientificamerican04201907-326b

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Sustained Electric Oscillations - pp326 - 327

doi:10.1038/scientificamerican04201907-326c

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Advantages of Turbine Propulsion for Battleships - p327

H. C. Dinger

doi:10.1038/scientificamerican04201907-327

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A Harvest of the Sea - pp328 - 329

W. G. Fitz-Gerald

doi:10.1038/scientificamerican04201907-328

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The Manufacture of Worsted Cloth - pp329 - 330

W. Frank M'clure

doi:10.1038/scientificamerican04201907-329

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The Use of Compressed Air in Logging - p330

E. A. Sterling

doi:10.1038/scientificamerican04201907-330

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The Hippodrome Mystery Unveiled - pp332 - 333

doi:10.1038/scientificamerican04201907-332

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A 250-Ton Mallet Locomotive - p333

doi:10.1038/scientificamerican04201907-333

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Loss of the Largest Ship Ever Wrecked - pp334 - 335

doi:10.1038/scientificamerican04201907-334

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An Improved Twine Cutter - p336

doi:10.1038/scientificamerican04201907-336

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Adjustable Tension Rods for Pianos - p336

doi:10.1038/scientificamerican04201907-336a

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A Novel Form of Nail - p336

doi:10.1038/scientificamerican04201907-336b

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Pipe Stopper or Test Plug - pp336 - 337

doi:10.1038/scientificamerican04201907-336c

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