The Watertown Arsenal Testing Machine - pp399 - 408

doi:10.1038/scientificamerican12241887-399

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The Eads Ship Railroad - p400

doi:10.1038/scientificamerican12241887-400

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A Great Raft of Lumber - p400

doi:10.1038/scientificamerican12241887-400a

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Patent “Innocents” Again in Congress - pp400 - 401

doi:10.1038/scientificamerican12241887-400b

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An Improved Dump Cart - p402

doi:10.1038/scientificamerican12241887-402

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The Transportation of War Vessels by Railway - p402

doi:10.1038/scientificamerican12241887-402a

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An Improved Jib Hank - pp402 - 403

doi:10.1038/scientificamerican12241887-402b

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An Improved Safety Car Heater - p403

doi:10.1038/scientificamerican12241887-403

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An Improved Gate - p403

doi:10.1038/scientificamerican12241887-403a

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An Improvement in Attaching Ax Helves - p403

doi:10.1038/scientificamerican12241887-403b

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An Improved Door Bolt - p403

doi:10.1038/scientificamerican12241887-403c

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A Machine for Forming Boot or Shoe Heels - p403

doi:10.1038/scientificamerican12241887-403d

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An Improved Fireproof Car Heater - pp403 - 404

doi:10.1038/scientificamerican12241887-403e

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A Lamp for Christmas Trees - p404

doi:10.1038/scientificamerican12241887-404

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Automatic Safety Elevator - p404

doi:10.1038/scientificamerican12241887-404a

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Improved Rocker for Ordinary Chairs - p404

doi:10.1038/scientificamerican12241887-404b

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Centrifugal Dyeing and Bleaching Apparatus - pp406 - 407

doi:10.1038/scientificamerican12241887-406

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Scientific Experiments with Simple Apparatus - p409

Geo. M. Hopkins

doi:10.1038/scientificamerican12241887-409

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Engineering Inventions - p410

doi:10.1038/scientificamerican12241887-410

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Agricultural Invention - p410

doi:10.1038/scientificamerican12241887-410a

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Miscellaneous Inventions - p410

doi:10.1038/scientificamerican12241887-410b

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To Inventors - p411

doi:10.1038/scientificamerican12241887-411a

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