Tanning Apparatus - pp401 - 402

doi:10.1038/scientificamerican12281861-401

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The Geological History of North America - p403

Stevens

doi:10.1038/scientificamerican12281861-403

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Wringing Machine—Washing Machines for the Army - p403

doi:10.1038/scientificamerican12281861-403a

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Hardening and Tempering Tools and Metals - p403

doi:10.1038/scientificamerican12281861-403b

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Chemistry of Iron - p403

doi:10.1038/scientificamerican12281861-403c

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Notes on Military and Naval Affairs - p404

doi:10.1038/scientificamerican12281861-404

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Notes on Shipbuilding and the Construction of Machinery in New York and Vicinity - pp405 - 406

doi:10.1038/scientificamerican12281861-405

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To our Friends - p407

doi:10.1038/scientificamerican12281861-407

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War With England - p407

doi:10.1038/scientificamerican12281861-407a

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The Old Year's Progress - p407

doi:10.1038/scientificamerican12281861-407b

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A Few Words to Our Subscribers on the Closing Volume - p407

doi:10.1038/scientificamerican12281861-407c

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The Chemistry of Iron - p407

doi:10.1038/scientificamerican12281861-407d

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War and Science - p408

doi:10.1038/scientificamerican12281861-408

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Spherical Shot vs. Elongated Projectiles - p408

doi:10.1038/scientificamerican12281861-408a

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Adjustable Pipe Wrench - p408

doi:10.1038/scientificamerican12281861-408b

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Recent American Inventions - p409

doi:10.1038/scientificamerican12281861-409

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Patent Claims - pp409 - 410

doi:10.1038/scientificamerican12281861-409a

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New York Markets - p411

doi:10.1038/scientificamerican12281861-411

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To Our Readers - p411

doi:10.1038/scientificamerican12281861-411b

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Index - pp411 - 414

doi:10.1038/scientificamerican12281861-411c

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