Improved Separator and Thrasher - p159

doi:10.1038/scientificamerican03111865-159

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A Stone Falling through the Earth - p159

doi:10.1038/scientificamerican03111865-159a

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Remarks on the Subject of Force in General - p160

John A. Roebling

doi:10.1038/scientificamerican03111865-160

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High and Low Steel - pp160 - 162

doi:10.1038/scientificamerican03111865-160a

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Rudolph & Kasefang's Brush Handle - p162

doi:10.1038/scientificamerican03111865-162

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A Practical Plan for Destroying the Span Worm - pp162 - 163

doi:10.1038/scientificamerican03111865-162a

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Manufacture of Bells - p163

doi:10.1038/scientificamerican03111865-163

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Reminiscences of Glass-Blowing - pp163 - 164

doi:10.1038/scientificamerican03111865-163a

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Farmers' Club - p164

doi:10.1038/scientificamerican03111865-164

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Miscellaneous Summary - pp165 - 166

doi:10.1038/scientificamerican03111865-165

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Hot-Beds - p166

doi:10.1038/scientificamerican03111865-166

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Boring Steam Cylinders - p167

doi:10.1038/scientificamerican03111865-167

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Professor Bowen on the Currency - p167

doi:10.1038/scientificamerican03111865-167a

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Impregnable Ships of War - p167

doi:10.1038/scientificamerican03111865-167b

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Transplanting trees - p168

doi:10.1038/scientificamerican03111865-168

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End of the Goodyear Extension Case - p168

doi:10.1038/scientificamerican03111865-168a

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Patents Claims - pp168 - 171

doi:10.1038/scientificamerican03111865-168b

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