Scientific American Magazine Vol 26 Issue 12

Scientific American Magazine

Volume 26, Issue 12

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Features

Colt's Armory Testing Machine, Railway Power Brakes

Interesting Lecture by Professor Tyndall—The Identity of Light and Radiant Heat

The Yale Exploring Expedition of 1871

FOSSIL SEA-SERPENTS-A CURIOUS SWIMMING

The New York Fire Alarm Telegraph

Printing the Patent Drawings

Interior of a Greenhouse

Jones' Improved Projectile for Firearms

Magnesium in Marsh's Test for Arsenic

John C. Draper

Millener's Extension Ladder

The Color of the Gulf Stream, and Its Excess of Solid Matter Accounted For

William L. Walker

The Progress of Stellar Chemistry

Walsh's Water Wheel Governor

Chapman's Improved Saw Filing Machine

Tunnelling under City Streets and The Atmospheric Railway

American Art Industry

A Munchausen Comet

Are Experimental Tests of Turbine Wheels Trustworthy?

The Common Law of Trademarks

Measuring the Heat of Combustion

Labor and Personal Cleanliness

Scientific and Practical Information

Recent American and Foreign Patents

Departments

Correspondence - March 16, 1872

Answers to Correspondents - March 16, 1872

Notes and Queries - March 16, 1872

Business and Personal - March 16, 1872

Index of Inventions - March 16, 1872