Report of the Commissioner of Patents for 1888 - p112

doi:10.1038/scientificamerican02231889-112

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A Reply to the New York “World” - p112

doi:10.1038/scientificamerican02231889-112a

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Official trial Op the Gunboat Yorktown - pp112 - 113

doi:10.1038/scientificamerican02231889-112b

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An Improved Wire Tightener - p114

doi:10.1038/scientificamerican02231889-114

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A Device for Piercing Ears and Inserting Earrings - p114

doi:10.1038/scientificamerican02231889-114a

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An Improved Brake Shoe for Railroad Cars - p114

doi:10.1038/scientificamerican02231889-114b

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An Improved Steam Heater - p114

doi:10.1038/scientificamerican02231889-114c

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A Device for Sharpening Stone-Cutting Tools - p114

doi:10.1038/scientificamerican02231889-114d

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An Improved Guard for Step Ladders - p115

doi:10.1038/scientificamerican02231889-115

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An Improved Fire Escape - p115

doi:10.1038/scientificamerican02231889-115a

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An Improved Axle - p115

doi:10.1038/scientificamerican02231889-115b

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An Improved Railway - p115

doi:10.1038/scientificamerican02231889-115c

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An Improved Plow Clevis - p115

doi:10.1038/scientificamerican02231889-115d

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Gun Cotton-Its History, Manufacture, Use - pp116 - 117

Karl Rohrer, U. S. N.

doi:10.1038/scientificamerican02231889-116

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Test of the Cast Steel Breech Loading Rifle of open Hearth Steel - pp118 - 119

doi:10.1038/scientificamerican02231889-118

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Terraced Irrigation Process of Sewage Disposal - p119

T. O'Conor Sloane, PH.D.

doi:10.1038/scientificamerican02231889-119

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The Jerboa - pp119 - 120

doi:10.1038/scientificamerican02231889-119a

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Simple Experiments in Physics - p121

Geo. M. Hopkins

doi:10.1038/scientificamerican02231889-121

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To Inventors - p123

doi:10.1038/scientificamerican02231889-123a

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