Hilgard's Design for a Steel Arch Bridge at Minneapolis - pp255 - 256

doi:10.1038/scientificamerican10231886-255

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Twine - p256

doi:10.1038/scientificamerican10231886-256

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Photographic Notes - p257

doi:10.1038/scientificamerican10231886-257

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Seal Lock - p258

doi:10.1038/scientificamerican10231886-258

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Metallic Spring for Suspenders - p258

doi:10.1038/scientificamerican10231886-258a

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Improved Pail Ear - p258

doi:10.1038/scientificamerican10231886-258b

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Car Coupling - p258

doi:10.1038/scientificamerican10231886-258c

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Car Coupling - p258

doi:10.1038/scientificamerican10231886-258d

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Soldering Case - pp258 - 259

doi:10.1038/scientificamerican10231886-258e

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Floods in India - p259

doi:10.1038/scientificamerican10231886-259

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Tunneling by Freezing - pp259 - 260

doi:10.1038/scientificamerican10231886-259a

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Polarized Light - p262

M. Hopkins

doi:10.1038/scientificamerican10231886-262

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The Quadrumana - pp263 - 264

L. P. Gratacap

doi:10.1038/scientificamerican10231886-263

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The Water Tower at Victoria, Texas - p264

doi:10.1038/scientificamerican10231886-264

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Decision Relating to Patents - p264

doi:10.1038/scientificamerican10231886-264a

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Torricelli's Principle and Mercury Fountain - p265

T O'conor Sloane, Ph.D

doi:10.1038/scientificamerican10231886-265

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Engineering Inventions - p266

doi:10.1038/scientificamerican10231886-266

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Mechanical Invention - p266

doi:10.1038/scientificamerican10231886-266a

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Agricultural Inventions - p266

doi:10.1038/scientificamerican10231886-266b

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Miscellaneous Inventions - pp266 - 267

doi:10.1038/scientificamerican10231886-266c

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To Inventors - p267

doi:10.1038/scientificamerican10231886-267b

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