Bridging the Hudson River - p418

doi:10.1038/scientificamerican12081906-418

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Safeguards for the Panama Canal Locks - p418

doi:10.1038/scientificamerican12081906-418a

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Airships in the French Army - pp418 - 419

doi:10.1038/scientificamerican12081906-418b

PDF (321 KB)

National Academy of Sciences - p419

William H. Hale

doi:10.1038/scientificamerican12081906-419

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Points about Needles - p419

H. R. Christy

doi:10.1038/scientificamerican12081906-419a

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The Pharmaceutical Industry of France - pp420 - 423

Jacques Boyer

doi:10.1038/scientificamerican12081906-420

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The De Pluvy Diving Dress - p423

doi:10.1038/scientificamerican12081906-423

PDF (282 KB)

Some Novel Electric Labor-Saving Devices - p424

doi:10.1038/scientificamerican12081906-424

PDF (272 KB)

A Pocket-Knife Artist - p425

Day Allen Willey

doi:10.1038/scientificamerican12081906-425

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Oceanographic Museum of Monaco - p427

doi:10.1038/scientificamerican12081906-427

PDF (258 KB)

Weapons Weird and Wonderful - pp428 - 430

C. Field

doi:10.1038/scientificamerican12081906-428

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The Microphotoscope—An Apparatus for Examining Minute Maps - p430

Alfred Gradenwitz

doi:10.1038/scientificamerican12081906-430

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Birds of an Ocean Island - pp431 - 432

B. S. Bowdish

doi:10.1038/scientificamerican12081906-431

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Business and Personal Wants - p433

doi:10.1038/scientificamerican12081906-433a

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The Progress of the Hollow Concrete Block Industry - p433

doi:10.1038/scientificamerican12081906-433c

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