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Improved Cotton and Hay Press

Bells and Bell Metal

British Railway Signals

The Artisan in Austria, Russia, and Sweden

Gleason's Improved Band Saw

The Scarabids--The Flower Beetles and their Allies

By Edward C. H. Day

The Training of Prussian and French Soldiers

By Archibald Maclaren

Mechanical Drawing

The Increasing Use of Glycerin

The Government Storm Signals

Female Inventive Talent

American Magazine Literature

The Franco-Prussian War

Harvard School of Dentistry

The Sheffield Scientific School of Yale College

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


  • Letters

    Correspondence- September 17, 1870

  • Departments

    Business and Personal- September 17, 1870

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September 17, 1870

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