How the Law May Prevent Railroad Accidents - p506

doi:10.1038/scientificamerican06221907-506

PDF (166 KB)

We Build a Locomotive on the Metric System - p506

doi:10.1038/scientificamerican06221907-506a

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Brunel and the Seven-Foot Gage - p506

doi:10.1038/scientificamerican06221907-506b

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Another Long-Distance Transmission in California - p506

doi:10.1038/scientificamerican06221907-506c

PDF (166 KB)

Tinol - pp506 - 507

doi:10.1038/scientificamerican06221907-506d

PDF (241 KB)

A Telephone Newspaper - p507

W. G. Fitz-Gerald

doi:10.1038/scientificamerican06221907-507

PDF (96 KB)

Result of the Motor Boat Race to Bermuda - p507

doi:10.1038/scientificamerican06221907-507a

PDF (96 KB)

Automobile Races and Record Runs - p507

doi:10.1038/scientificamerican06221907-507b

PDF (96 KB)

The Government Tests of Submarines - p508

doi:10.1038/scientificamerican06221907-508

PDF (251 KB)

The Wellman Polar Airship Expedition - pp509 - 510

doi:10.1038/scientificamerican06221907-509

PDF (315 KB)

Double-Deck Streets as a Relief for Traffic Congestion - p510

doi:10.1038/scientificamerican06221907-510

PDF (435 KB)

The Art and Craft of the Medalist - pp511 - 512

Victor D. Brenner

doi:10.1038/scientificamerican06221907-511a

PDF (378 KB)

Mechanical Masterpieces of the Eighteenth Century - pp513 - 514

Alfred Gradenwitz

doi:10.1038/scientificamerican06221907-513

PDF (605 KB)

Do Animals Reason? - p515

L. A. Camacho

doi:10.1038/scientificamerican06221907-515

PDF (248 KB)

An Artificial Respirator - p515

John W. Hall

doi:10.1038/scientificamerican06221907-515a

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An Improved Clothes Line Hanger - p516

doi:10.1038/scientificamerican06221907-516

PDF (236 KB)

A Novel Pneumatic Massage Machine - p516

doi:10.1038/scientificamerican06221907-516a

PDF (236 KB)

Spark-Producing Mechanism for Explosion Engines - p516

doi:10.1038/scientificamerican06221907-516b

PDF (236 KB)

Novel Safety Razor - p516

doi:10.1038/scientificamerican06221907-516c

PDF (236 KB)