Manufacture of Heavy Guns for U. S. Navy - p159

doi:10.1038/scientificamerican03141891-159

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Indoor Exercise - p160

doi:10.1038/scientificamerican03141891-160

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Poison of Snakes - p161

Nicolas Pike, By

doi:10.1038/scientificamerican03141891-161

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A Window Cleaning Brush - p162

doi:10.1038/scientificamerican03141891-162

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Boiler Flue Flanging Machine - p162

doi:10.1038/scientificamerican03141891-162a

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A Foot Bath Device - p162

doi:10.1038/scientificamerican03141891-162b

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An Improved Safety Valve - p163

doi:10.1038/scientificamerican03141891-163

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A Propelling Mechanism for Vehicles - p163

doi:10.1038/scientificamerican03141891-163a

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An Improved Wrench - p163

doi:10.1038/scientificamerican03141891-163b

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A Safety Bolt for Spring Latches - p163

doi:10.1038/scientificamerican03141891-163c

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An Electric Belt and Body Attachments - pp163 - 165

doi:10.1038/scientificamerican03141891-163d

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A Smoke Effect with a Single Lantern - p165

doi:10.1038/scientificamerican03141891-165

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A Pneumatic Flying Machine - pp167 - 168

doi:10.1038/scientificamerican03141891-167

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An Improved Churn - p168

doi:10.1038/scientificamerican03141891-168

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Church Acoustics - p169

doi:10.1038/scientificamerican03141891-169

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New Books and Publications - p170

doi:10.1038/scientificamerican03141891-170a

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Scientific American Building Edition - p170

doi:10.1038/scientificamerican03141891-170b

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To Inventors - p171

doi:10.1038/scientificamerican03141891-171b

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List of Architectural Books - p172

doi:10.1038/scientificamerican03141891-172

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Experimental Science - p173

doi:10.1038/scientificamerican03141891-173a

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The Scientific American - p174

doi:10.1038/scientificamerican03141891-174

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