Slag a Cause of Broken Rails - p310

doi:10.1038/scientificamerican10301909-310

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Our Vanishing Timber Supply - p310

doi:10.1038/scientificamerican10301909-310a

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Death of Prof. Lombroso - p310

doi:10.1038/scientificamerican10301909-310b

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Count De Lambert's Flight over the Eiffel Tower - p310

doi:10.1038/scientificamerican10301909-310c

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Engineering - p311

doi:10.1038/scientificamerican10301909-311

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Electricity - p311

doi:10.1038/scientificamerican10301909-311a

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Science - p311

doi:10.1038/scientificamerican10301909-311b

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The Brussels Popular Electrical Laboratory - p312

Alfred Gradenwitz

doi:10.1038/scientificamerican10301909-312

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A Curious Chemical Growth - p313

doi:10.1038/scientificamerican10301909-313

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Playing with Fire - p313

doi:10.1038/scientificamerican10301909-313a

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Measuring Holes by Electricity - p313

doi:10.1038/scientificamerican10301909-313b

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Differential Speed Indicator - p313

doi:10.1038/scientificamerican10301909-313c

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Accident Preventer - p313

doi:10.1038/scientificamerican10301909-313d

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A Surveyor's Telephoto - p313

doi:10.1038/scientificamerican10301909-313e

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High-Speed Destroyers for the United States Navy - p314

doi:10.1038/scientificamerican10301909-314

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Leduc's Figures - p315

doi:10.1038/scientificamerican10301909-315a

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Why Do Watch Springs Break? - p315

doi:10.1038/scientificamerican10301909-315b

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A Magic Square - p315

doi:10.1038/scientificamerican10301909-315c

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The Breaking of Main Springs in Storms - p315

doi:10.1038/scientificamerican10301909-315d

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An Optical Phenomenon - p315

doi:10.1038/scientificamerican10301909-315e

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How Germany Makes Forestry Pay - pp316 - 317

Frederic Blount Warren

doi:10.1038/scientificamerican10301909-316

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Patent Department - p319

doi:10.1038/scientificamerican10301909-319

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Sleigh-Runner Attachment for Baby Carriages - p319

doi:10.1038/scientificamerican10301909-319a

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Combined Friction and Jaw Clutch - p319

doi:10.1038/scientificamerican10301909-319b

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A Perfected Form of Lock Nut - p319

doi:10.1038/scientificamerican10301909-319c

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Oddities in Invention - p319

doi:10.1038/scientificamerican10301909-319d

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