Casement's Pressure Regulator for Fluids - p127

doi:10.1038/scientificamerican02281874-127

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Patent Monopolies in Congress - p128

doi:10.1038/scientificamerican02281874-128

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Slippery Pavements - p128

doi:10.1038/scientificamerican02281874-128a

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Herschel, Tyndall, and Draper on the Sun Ray - pp128 - 129

doi:10.1038/scientificamerican02281874-128b

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Whitworth Steel - p129

doi:10.1038/scientificamerican02281874-129

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A Paper and Glass Debate - p129

doi:10.1038/scientificamerican02281874-129a

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Scientific and Practical Information - p129

doi:10.1038/scientificamerican02281874-129b

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To New Subscribers - p129

doi:10.1038/scientificamerican02281874-129c

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Improved Movable Teeth for Saws - p130

doi:10.1038/scientificamerican02281874-130

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Hilf's Iron Permanent Way - p130

doi:10.1038/scientificamerican02281874-130a

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Pipe Cutting and Threading Machine - p131

doi:10.1038/scientificamerican02281874-131

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Improved Trench Braces - p131

doi:10.1038/scientificamerican02281874-131a

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On the Purification of Mercury - pp131 - 132

Albert R. Leeds

doi:10.1038/scientificamerican02281874-131b

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Casement's Improved Method of Burning Fuel - pp135 - 136

doi:10.1038/scientificamerican02281874-135

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How Shall I Introduce my Invention? - p136

doi:10.1038/scientificamerican02281874-136

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Decisions of the Courts - p136

doi:10.1038/scientificamerican02281874-136a

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Recent American and Foreign Patents - p137

doi:10.1038/scientificamerican02281874-137

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Answers Correspondents - pp138 - 139

doi:10.1038/scientificamerican02281874-138a

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Communications Received - p139

doi:10.1038/scientificamerican02281874-139

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Canadian Patents - p140

doi:10.1038/scientificamerican02281874-140

PDF (491 KB)