Modern Hill Climbing - p175

doi:10.1038/scientificamerican09181880-175

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Adulterations and Substitutions - p176

doi:10.1038/scientificamerican09181880-176

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The Photophone - p176

doi:10.1038/scientificamerican09181880-176a

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An Astronomical Discovery - p176

doi:10.1038/scientificamerican09181880-176b

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How are the Oil Tanks Set on Fire by the Lightning ? - pp176 - 177

doi:10.1038/scientificamerican09181880-176c

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The Hudson River Tunnel - p177

doi:10.1038/scientificamerican09181880-177

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Agricultural Inventions - p178

doi:10.1038/scientificamerican09181880-178

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Improved Lace Cutter - p178

doi:10.1038/scientificamerican09181880-178a

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Improved Harness Buckle - p178

doi:10.1038/scientificamerican09181880-178b

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New Dish Washer - p178

doi:10.1038/scientificamerican09181880-178c

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A New Rock Drill - p179

doi:10.1038/scientificamerican09181880-179

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Mechanical Inventions - pp179 - 180

doi:10.1038/scientificamerican09181880-179b

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Decisions Relating to Patents - p180

doi:10.1038/scientificamerican09181880-180

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A Modified Daniell Cell - pp181 - 182

doi:10.1038/scientificamerican09181880-181a

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Improved Valve-Gear for Engines - p182

doi:10.1038/scientificamerican09181880-182

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Halter to Prevent Horses from Cribbing - p182

doi:10.1038/scientificamerican09181880-182a

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Miscellaneous Inventions - p182

doi:10.1038/scientificamerican09181880-182b

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The India-Rubber and Gutta Percha Industries - pp183 - 185

doi:10.1038/scientificamerican09181880-183

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Engineering Inventions - pp185 - 186

doi:10.1038/scientificamerican09181880-185

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The Conch Fisheries of the Bahamas - p186

W. H. Weed

doi:10.1038/scientificamerican09181880-186

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Natural History Notes - p186

doi:10.1038/scientificamerican09181880-186a

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Curious Facts about the Albatross - pp186 - 187

doi:10.1038/scientificamerican09181880-186b

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Communications Received - p188

doi:10.1038/scientificamerican09181880-188

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