The Obstructions in the Delaware - pp159 - 160

doi:10.1038/scientificamerican03161889-159

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Naval and Maritime Prospects Under the New Administration - p160

doi:10.1038/scientificamerican03161889-160

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Naval War of the Future - pp160 - 161

doi:10.1038/scientificamerican03161889-160a

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Proposed Increase of the British Navy - p161

doi:10.1038/scientificamerican03161889-161

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A Rival for Jute - p161

doi:10.1038/scientificamerican03161889-161a

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The Celestial World - p161

doi:10.1038/scientificamerican03161889-161b

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An Improved Pipe Coupling - p162

doi:10.1038/scientificamerican03161889-162

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An Improved Buckle - p162

doi:10.1038/scientificamerican03161889-162a

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An Improved Lamp Burner - p162

doi:10.1038/scientificamerican03161889-162b

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An Improved Potato Planter - p162

doi:10.1038/scientificamerican03161889-162c

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An Improved Barrel - p162

doi:10.1038/scientificamerican03161889-162d

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An Improved Music or Book Holder - p162

doi:10.1038/scientificamerican03161889-162e

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Captain John Ericsson - pp163 - 164

doi:10.1038/scientificamerican03161889-163

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The Manchester Ship Canal - pp164 - 165

doi:10.1038/scientificamerican03161889-164

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An Improved Vehicle Shaft Support - p165

doi:10.1038/scientificamerican03161889-165

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An Improved Road Cart - p165

doi:10.1038/scientificamerican03161889-165a

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An Improved Pavement - p165

doi:10.1038/scientificamerican03161889-165b

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The Charity Institutions of Paris - p166

doi:10.1038/scientificamerican03161889-166

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A Suggestion in Canal Boat Propulsion - p167

doi:10.1038/scientificamerican03161889-167

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Vibrations of Diaphragms - pp167 - 168

M. Hopkins

doi:10.1038/scientificamerican03161889-167a

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To Inventors - p171

doi:10.1038/scientificamerican03161889-171

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