The Proposed Hudson River Suspension Bridge - p319

doi:10.1038/scientificamerican05231891-319

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Original Work in America - p320

doi:10.1038/scientificamerican05231891-320

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Progress of Steam Engineering - pp320 - 321

doi:10.1038/scientificamerican05231891-320a

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A Drill to Facilitate Blasting - p322

doi:10.1038/scientificamerican05231891-322

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A Locomotive Spark Arrester - p322

doi:10.1038/scientificamerican05231891-322a

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An Improved Gate Valve - p322

doi:10.1038/scientificamerican05231891-322b

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An Improved Freight Car Coupler - p322

doi:10.1038/scientificamerican05231891-322c

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An Improved Ore Washer - p326

doi:10.1038/scientificamerican05231891-326

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Breast Wheel for Lifting Water into the Morris Canal - p326

doi:10.1038/scientificamerican05231891-326a

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Some Apparatus used by the Vienna Fire Department - pp327 - 328

doi:10.1038/scientificamerican05231891-327

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The Type-Writer a French Invention - pp328 - 329

doi:10.1038/scientificamerican05231891-328

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Iridescent Glass - p329

M. Hopkins

doi:10.1038/scientificamerican05231891-329

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To Inventors - p331

doi:10.1038/scientificamerican05231891-331a

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