New Mechanical Inventions - p271

doi:10.1038/scientificamerican05041878-271

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Improved Machine Tools - p271

doi:10.1038/scientificamerican05041878-271a

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How Patents Affect Prices - p272

doi:10.1038/scientificamerican05041878-272

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What is Life? - pp272 - 273

doi:10.1038/scientificamerican05041878-272a

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The Decline of the Ironclad - p273

doi:10.1038/scientificamerican05041878-273

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Congress and the Patent Office Funds - pp273 - 274

doi:10.1038/scientificamerican05041878-273a

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Improved Machine Tools - p274

doi:10.1038/scientificamerican05041878-274

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Hydraulic Mining in California - pp274 - 275

doi:10.1038/scientificamerican05041878-274a

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Improved Tool Stocks for Dental Engines - p275

doi:10.1038/scientificamerican05041878-275

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Communications - p276

doi:10.1038/scientificamerican05041878-276

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Astronomical Notes - p277

Berlin H. Wright

doi:10.1038/scientificamerican05041878-277

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New York Academy of Sciences - pp277 - 278

doi:10.1038/scientificamerican05041878-277a

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Lining Roofs with Mineral Wool - p278

doi:10.1038/scientificamerican05041878-278

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Improved Insect Powder Blower - p278

doi:10.1038/scientificamerican05041878-278a

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The Boiling Lake of Dominica - p279

doi:10.1038/scientificamerican05041878-279

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Improved Clam Baker - pp279 - 280

doi:10.1038/scientificamerican05041878-279a

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The Pyrenean Pine - p280

doi:10.1038/scientificamerican05041878-280

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The Oil Bearing Sands of Pennsylvania - pp280 - 281

doi:10.1038/scientificamerican05041878-280a

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Improved Pipe Tongs - p281

doi:10.1038/scientificamerican05041878-281

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Improved Receiver and Stench Trap - p281

doi:10.1038/scientificamerican05041878-281a

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Influence of Cosmical Matter - p281

doi:10.1038/scientificamerican05041878-281b

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Proposed Injustice to Inventors - p282

doi:10.1038/scientificamerican05041878-282

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Hydrobromic Acid - p282

doi:10.1038/scientificamerican05041878-282a

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Communications Received - p283

doi:10.1038/scientificamerican05041878-283c

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The Scientific American - p284

doi:10.1038/scientificamerican05041878-284a

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