The Alleghany Bridge at Pittsburgh, Pa, Selecting Durable and Perishable Timber - p391

doi:10.1038/scientificamerican06181870-391

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Scientific Intelligence - pp392 - 393

doi:10.1038/scientificamerican06181870-392

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The Scorpion - pp394 - 395

Edward C. H. Day, By

doi:10.1038/scientificamerican06181870-394

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Achenbach's Rein Holder - pp395 - 396

doi:10.1038/scientificamerican06181870-395

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Hotte's Improved Coffeepot - p398

doi:10.1038/scientificamerican06181870-398

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Molecular Motion - p399

doi:10.1038/scientificamerican06181870-399

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Potash from Feldspar - p399

doi:10.1038/scientificamerican06181870-399a

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The School of Mines, Columbia College - p399

doi:10.1038/scientificamerican06181870-399b

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Conduction and Convection of Heat - pp399 - 400

doi:10.1038/scientificamerican06181870-399c

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Are Tin Fruit Cans a Source of Metallic Poisoning? - p400

doi:10.1038/scientificamerican06181870-400

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The Mystery of Sleep - p400

doi:10.1038/scientificamerican06181870-400a

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Primary School Education - p400

doi:10.1038/scientificamerican06181870-400b

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A New Alkaloid in Opium - pp400 - 401

doi:10.1038/scientificamerican06181870-400c

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Thirty-Ninth Industrial Exhibition of the American Institute - p401

doi:10.1038/scientificamerican06181870-401

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Cincinnati Industrial Exhibition - p401

doi:10.1038/scientificamerican06181870-401a

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New Mechanical Movements - p401

doi:10.1038/scientificamerican06181870-401b

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Patent Office Affairs - pp401 - 402

doi:10.1038/scientificamerican06181870-401c

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Answers to Correspondets - p402

doi:10.1038/scientificamerican06181870-402a

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Recent American and Foreign Patents - pp402 - 403

doi:10.1038/scientificamerican06181870-402b

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Official List of Patents - pp403 - 404

doi:10.1038/scientificamerican06181870-403

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Applications for the Extension of Patents - pp404 - 406

doi:10.1038/scientificamerican06181870-404a

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