The Distribution of Light and Heat in New York City - pp319 - 320

doi:10.1038/scientificamerican11191881-319

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The Madge and Her Victories - p320

doi:10.1038/scientificamerican11191881-320

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The St. Gothard Tunnel - pp320 - 321

doi:10.1038/scientificamerican11191881-320a

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Is Insanity Increasing? - p321

doi:10.1038/scientificamerican11191881-321

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Railroad Inventions Wanted - p321

doi:10.1038/scientificamerican11191881-321a

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New Compressed Air Locomotive on the Elevated Railway, New York - p321

doi:10.1038/scientificamerican11191881-321b

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Allen's Portable Compression Riveter - p322

doi:10.1038/scientificamerican11191881-322

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Mechanical Inventions - pp322 - 323

doi:10.1038/scientificamerican11191881-322a

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Improved Dinner Bucket - p323

doi:10.1038/scientificamerican11191881-323

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Tile for Illuminating Purposes - pp323 - 324

doi:10.1038/scientificamerican11191881-323a

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Steam Boiler Notes - p324

doi:10.1038/scientificamerican11191881-324

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Miscellaneous Inventions - p324

doi:10.1038/scientificamerican11191881-324a

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Engineering Inventions - p326

doi:10.1038/scientificamerican11191881-326

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Improved Pocket Knife - p326

doi:10.1038/scientificamerican11191881-326a

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Improved Book Rest - p326

doi:10.1038/scientificamerican11191881-326b

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Centrifugal Extractor for Cane Juice - p326

doi:10.1038/scientificamerican11191881-326c

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Electrical Magic - pp327 - 329

doi:10.1038/scientificamerican11191881-327

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The Spotted Amblystome - p329

C. Few Seiss

doi:10.1038/scientificamerican11191881-329

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Communications Received - p331

doi:10.1038/scientificamerican11191881-331

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