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Scientific American Magazine Vol 21 Issue 26

Scientific American Magazine

Volume 21, Issue 26

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Features

Seymour's Patent Pocket Boot-Jack

Improved Horse-Power Fire Engine, Novel Trout Fishing

Railway Bridge Across the Seine

The Spectroscope and Aurora Borealis

Daniel Knode Winder

Official List of Patents

American Inventions in Europe

New Publications

Reduce the Cost of Patents

Steam Plowing in America

Announcements for the New Volume

To Our Readers

The Uses of Snow

What Remains for Inventors

Men of Progress—Great Inventors

The Constructive Faculty of the Mind

Micrographs

Answers to Correspondents

Applications for Extension of Patents

Recent American and Foreign Patents

Departments

Correspondence

Business and Personal

Index