Krupp's 1,000-Pounder Siege Gun, Great Circle “Travel” - p207

doi:10.1038/scientificamerican10011870-207

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Shortt's Self-Centering Sleeve Coupling - pp207 - 208

doi:10.1038/scientificamerican10011870-207a

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Bronze vs. Steel and Iron for Field Artillery - p208

doi:10.1038/scientificamerican10011870-208

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The Dissipation of Energy - pp208 - 209

doi:10.1038/scientificamerican10011870-208a

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On the Application of the Hot Blast to Blow-Pipe Purposes - p209

W. Skey

doi:10.1038/scientificamerican10011870-209

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The Bridge de Laisne on the Railway from Soissons to Laon, in France - p210

doi:10.1038/scientificamerican10011870-210

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Important Patent Office Decisions - p211

doi:10.1038/scientificamerican10011870-211

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Bussell's Disk Cultivator and Harrow - p211

doi:10.1038/scientificamerican10011870-211a

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New Relations of Silica - p215

doi:10.1038/scientificamerican10011870-215

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History and Progress of Photography - p215

doi:10.1038/scientificamerican10011870-215a

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The Use of Balloons in Warfare - p215

doi:10.1038/scientificamerican10011870-215b

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Fair of the American Institute - p216

doi:10.1038/scientificamerican10011870-216

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Resources of the South—Notes of a Trip from New York to Western Texas - pp216 - 217

doi:10.1038/scientificamerican10011870-216a

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New Mechanical Movements - pp217 - 218

doi:10.1038/scientificamerican10011870-217

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Scientific Intelligence - p218

doi:10.1038/scientificamerican10011870-218

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Answers to Correspondents - p218

doi:10.1038/scientificamerican10011870-218b

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Recent American and Foreign Patents - p219

doi:10.1038/scientificamerican10011870-219

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Official List of Patents - pp219 - 220

doi:10.1038/scientificamerican10011870-219a

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