Improved Balanced Slide Valve, Curious Case of Asymmetry - p143

doi:10.1038/scientificamerican03041871-143

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Measuring Faucet - p143

doi:10.1038/scientificamerican03041871-143b

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One Hundred Years Ago - p144

doi:10.1038/scientificamerican03041871-144

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Wood and Ivory Carving - pp144 - 145

J. D. Crace, By

doi:10.1038/scientificamerican03041871-144a

PDF (287 KB)

Perpetual Motion - p146

doi:10.1038/scientificamerican03041871-146

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Improvements in Casting Pulleys and Grooved Rolls - p146

doi:10.1038/scientificamerican03041871-146a

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Infantile Power Washing Machine - p146

doi:10.1038/scientificamerican03041871-146b

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On the Proper Resistance of Telegraphic Relays - p148

doi:10.1038/scientificamerican03041871-148

PDF (213 KB)

Peanuts and Peanut Oil - p149

H. E. Colton, By

doi:10.1038/scientificamerican03041871-149

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Dyers' Recipes - pp149 - 150

doi:10.1038/scientificamerican03041871-149a

PDF (400 KB)

Improved Horse-Power Hayfork - p150

doi:10.1038/scientificamerican03041871-150

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The Mechanical Equation - p151

doi:10.1038/scientificamerican03041871-151

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Dangers of Petroleum Oils. Report of the Health Board of New Orleans. A Law Regulating the Sale of Such Oils Recommended - p151

doi:10.1038/scientificamerican03041871-151a

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A Government Bureau of Mines - p151

doi:10.1038/scientificamerican03041871-151b

PDF (339 KB)

Narrow Gage Railways - pp151 - 152

doi:10.1038/scientificamerican03041871-151c

PDF (339 KB)

The American Eclipse Expedition - p152

doi:10.1038/scientificamerican03041871-152

PDF (149 KB)

Peat Fuel for Locomotives - p152

doi:10.1038/scientificamerican03041871-152a

PDF (480 KB)

The Lifting Cure - p152

doi:10.1038/scientificamerican03041871-152b

PDF (480 KB)

Alaska.—Climate and Products - p152

doi:10.1038/scientificamerican03041871-152c

PDF (480 KB)

Statistics of Steam Boiler Explosions for the Year 1870 - pp153 - 154

doi:10.1038/scientificamerican03041871-153

PDF (480 KB)

Answers to Correspondents - p154

doi:10.1038/scientificamerican03041871-154a

PDF (296 KB)

Queries - p154

doi:10.1038/scientificamerican03041871-154b

PDF (811 KB)

Recent American and foreign Patents - pp154 - 155

doi:10.1038/scientificamerican03041871-154c

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Official List of Patents - pp155 - 156

doi:10.1038/scientificamerican03041871-155b

PDF (973 KB)