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Scientific American Magazine Vol 20 Issue 13

Scientific American Magazine

Volume 20, Issue 13

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Features

Intermittent Springs—Error in the Works on Physics

Lithograghic Fac-simile Copying Press

Dyeing in France and Contributions of Modern Science to the Art

E. R. Mudge

Velocipede Summary

The Trade in Human Hair

The Manufacture of Iron—The Radcliffe Process

The Northern Pacific Railroad

Manufacture of Pressed and Cut Glass Ware

Douglas' Improved Patent Globe Valve

The East River Bridge

Alexander T. Stewart—A Noble Charity

The Mechanics of Walking

Canadian Patents—How Not to Get Them

Pretended Mechanics

Beet Root Sugar

The Gamgee Process

Gas Monopolies

Patent Case-Desulphurizing Ores

Recent American and Foreign Patents

Editorial Summary

Manufacturing, Mining, and Railroad Items

Answers to Correspondents

Official List of Patents

New Publications

Departments

Correspondence

Business and Personal