Improved Paging Machine - pp337 - 338

doi:10.1038/scientificamerican11301861-337

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Notes on Military and Naval Affairs - pp338 - 339

doi:10.1038/scientificamerican11301861-338

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The Geological History of North America - p340

Stevens

doi:10.1038/scientificamerican11301861-340

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Meriton's Safety Brake for Steering Gear - p340

doi:10.1038/scientificamerican11301861-340a

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Chemistry of Iron - p341

doi:10.1038/scientificamerican11301861-341

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Novel Knife Sharpener - p341

doi:10.1038/scientificamerican11301861-341a

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Which is the Best Washing Machine - p344

doi:10.1038/scientificamerican11301861-344

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Coburn's Patent Sash Fastener - p344

doi:10.1038/scientificamerican11301861-344a

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Muntz Sheathing for Iron Ships - p344

doi:10.1038/scientificamerican11301861-344b

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Fifteen Thousand Patents Secured Through our Agency - p345

doi:10.1038/scientificamerican11301861-345

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Building Stones and their Preservation - p345

doi:10.1038/scientificamerican11301861-345a

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Sand, Soap and Glass - p345

doi:10.1038/scientificamerican11301861-345b

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M'Cobmick's Extension Again—Personal - p345

doi:10.1038/scientificamerican11301861-345c

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Our Navy and its Gallant Commodore Dupont - pp345 - 346

doi:10.1038/scientificamerican11301861-345d

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Subjects for Invention - p346

doi:10.1038/scientificamerican11301861-346

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Trial Trip of the Steamer Constitution - pp346 - 347

doi:10.1038/scientificamerican11301861-346a

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Index of War and Naval Inventions - p347

doi:10.1038/scientificamerican11301861-347

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To our Editorial Brethren - p347

doi:10.1038/scientificamerican11301861-347a

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Notes on Foreign Inventions - p347

doi:10.1038/scientificamerican11301861-347b

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Recent American Inventions - p348

doi:10.1038/scientificamerican11301861-348

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Patent Claims - pp348 - 350

doi:10.1038/scientificamerican11301861-348a

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