Scientific American Magazine Vol 71 Issue 21

Scientific American Magazine

Volume 71, Issue 21

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Features

The Need of Efficient Vessels for the Navy

The French Traveling Schools

An Improved Swing Rail Railroad Frog

An Improved Journal Head for Rolls

An Improved Mechanical Carrier

The Columbia Telephone System--Its Factory and Instruments

The Launch of the St. Louis of the American Line

New Dynamometer for use in Anthropometry

Triple Expansion Engine-Frikart's System

The Leading and Glass Painting Industry

Departments

Correspondence - November 24, 1894

New Books and Publications - November 24, 1894

Recently Patented Inventions - November 24, 1894

Business and Personal - November 24, 1894

Notes and Queries - November 24, 1894

Index of Inventions - November 24, 1894

Patents - November 24, 1894