Changes in United States Patent Laws - p370

doi:10.1038/scientificamerican12111897-370

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The Proposed Government Armor Plant - p370

doi:10.1038/scientificamerican12111897-370a

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Some Curious Old Patents - pp370 - 371

doi:10.1038/scientificamerican12111897-370b

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Costly Butterflies - p371

George E. Walsh

doi:10.1038/scientificamerican12111897-371

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The Dietary of Cyclists - p371

doi:10.1038/scientificamerican12111897-371a

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Involuntary Movements as Controlled by Ideas - p371

doi:10.1038/scientificamerican12111897-371b

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An Automatic Electric Time Switch - p372

doi:10.1038/scientificamerican12111897-372

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An Improved Double Grinding Mill - p372

doi:10.1038/scientificamerican12111897-372a

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A Pump for Pneumatic Tires - p372

doi:10.1038/scientificamerican12111897-372b

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Pneumatic Mail Tube System, New York City - pp373 - 375

doi:10.1038/scientificamerican12111897-373

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A Low Priced Graphophone - p375

doi:10.1038/scientificamerican12111897-375

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A “Tug of War” between Early Steamships - p376

doi:10.1038/scientificamerican12111897-376

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Trial Trip of a British Built Torpedo Boat Destroyer for the Spanish Government - p376

doi:10.1038/scientificamerican12111897-376a

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The Buchanan-Gordon Diving Dress - p377

doi:10.1038/scientificamerican12111897-377

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An Improved Bicycle Brake - p378

doi:10.1038/scientificamerican12111897-378

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“Gone” - p379

doi:10.1038/scientificamerican12111897-379

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To Inventors - p381

doi:10.1038/scientificamerican12111897-381a

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