The “Maine” Inquiry - p146

doi:10.1038/scientificamerican03051898-146

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Railroad to the Yukon - p146

doi:10.1038/scientificamerican03051898-146a

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Side Doors or End Doors on Railroad Cars - pp146 - 147

doi:10.1038/scientificamerican03051898-146b

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The Opium Industry in America - p147

C. P. Holder

doi:10.1038/scientificamerican03051898-147a

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An Efficient Tire Bolt Wrench - p148

doi:10.1038/scientificamerican03051898-148

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An Automatic Acetylene Gas Generator - p148

doi:10.1038/scientificamerican03051898-148a

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Discharge Nozzle for Fire Engines - p148

doi:10.1038/scientificamerican03051898-148b

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Submarine Mining and Torpedo Warfare - pp149 - 150

doi:10.1038/scientificamerican03051898-149

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Apparatus for Measuring the Heights Reached by Balloons - p152

doi:10.1038/scientificamerican03051898-152

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Reconstruction of the Dismal Swamp Canal - pp153 - 154

doi:10.1038/scientificamerican03051898-153

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A Horned Cockerel - p155

Edwin G. Dexter

doi:10.1038/scientificamerican03051898-155

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A Device for Fastening Nuts - p155

doi:10.1038/scientificamerican03051898-155a

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To Inventors - p156

doi:10.1038/scientificamerican03051898-156b

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