Section Seven of the Amendments to the Patent Statutes - p210

doi:10.1038/scientificamerican04031897-210

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The Underground Trolley in New York City - pp210 - 211

doi:10.1038/scientificamerican04031897-210a

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The “Rotary” Steam Engine - p211

R. H. Thurston

doi:10.1038/scientificamerican04031897-211

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Diphtheria in Cold and Hot Countries - p211

doi:10.1038/scientificamerican04031897-211a

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The Manufacture of Ready Mixed Paints - p212

doi:10.1038/scientificamerican04031897-212

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A New Automatic Screw Cutting Die Head - p212

doi:10.1038/scientificamerican04031897-212a

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An Improved Boiler - p212

doi:10.1038/scientificamerican04031897-212b

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Scenes on the Columbia River, Oregon - p213

doi:10.1038/scientificamerican04031897-213

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The Bertillon System of Identification by Measurement - pp214 - 215

doi:10.1038/scientificamerican04031897-214

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A New Fast Job Printing Press - p216

doi:10.1038/scientificamerican04031897-216

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The Glaciers of Greenland - pp216 - 218

Ralph S. Tarr

doi:10.1038/scientificamerican04031897-216a

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A Fire Escape and Water Tower - p218

doi:10.1038/scientificamerican04031897-218

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Batchelor's Ripping Attachment for Sewing Machines - p218

doi:10.1038/scientificamerican04031897-218a

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To Inventors - p220

doi:10.1038/scientificamerican04031897-220b

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