An Inquiry into the Origin of Invention - p80

doi:10.1038/scientificamerican02091884-80

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The Standard Screw Threads - p80

doi:10.1038/scientificamerican02091884-80a

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To Drill Holes in Line - p80

doi:10.1038/scientificamerican02091884-80b

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Manufacture of Silver Spoons - p80

doi:10.1038/scientificamerican02091884-80c

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Setting-Up With the Wrench - p80

doi:10.1038/scientificamerican02091884-80d

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Trichinosis - p81

doi:10.1038/scientificamerican02091884-81

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The Patent Committee's Error - p81

doi:10.1038/scientificamerican02091884-81a

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Modern and Ancient Rainfall - p81

doi:10.1038/scientificamerican02091884-81b

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Improved Dam for Irrigating-Ditches - p82

doi:10.1038/scientificamerican02091884-82

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Single Rail Elevated Railway and Train - p82

doi:10.1038/scientificamerican02091884-82a

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Improved Gate - pp82 - 83

doi:10.1038/scientificamerican02091884-82b

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Constructing, Ventilating, and Cooling Cellars - p83

doi:10.1038/scientificamerican02091884-83

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Crank Pin for Steam Engines - pp83 - 84

doi:10.1038/scientificamerican02091884-83a

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The Automatic Flute and How to Make it - pp84 - 85

Victor Smedley

doi:10.1038/scientificamerican02091884-84

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Simple Photo-Enlarging Apparatus - p86

doi:10.1038/scientificamerican02091884-86

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Isolating Pavilions for Contagious Diseases - p87

doi:10.1038/scientificamerican02091884-87

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Ice Yachting - p88

doi:10.1038/scientificamerican02091884-88

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Improved Burial Windlass - pp88 - 89

doi:10.1038/scientificamerican02091884-88a

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Engineering Inventions - p90

doi:10.1038/scientificamerican02091884-90

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Mechanical Inventions - p90

doi:10.1038/scientificamerican02091884-90a

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Agricultural Inventions - p90

doi:10.1038/scientificamerican02091884-90b

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Miscellaneous Inventions - p90

doi:10.1038/scientificamerican02091884-90c

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