Scientific American Magazine Vol 23 Issue 12

Scientific American Magazine

Volume 23, Issue 12

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Features

Bells and Bell Metal

Improved Cotton and Hay Press

British Railway Signals

The Artisan in Austria, Russia, and Sweden

Gleason's Improved Band Saw

The Scarabids--The Flower Beetles and their Allies

Edward C. H. Day

The Training of Prussian and French Soldiers

Archibald Maclaren

Mechanical Drawing

The Government Storm Signals

The Increasing Use of Glycerin

The Franco-Prussian War

American Magazine Literature

Female Inventive Talent

The Sheffield Scientific School of Yale College

Harvard School of Dentistry

Scientific Intelligence- September 17, 1870

Recent American and Foreign Patents- September 17, 1870

Answers to Correspondents- September 17, 1870

Official List of Patents- September 17, 1870

Departments

Correspondence- September 17, 1870

Business and Personal- September 17, 1870