Improved Cannon and Projectiles

Notes on Military and Naval Affairs

Chemistry of Iron

Armstrong Guns and Smooth Bores

Criticism on the Erie Experiments in Working Steam

Fifteen Thousand Patents Secured through Our Agency

Preparations for Flax Culture

Sulphite of Lime in Cider

History and Art of Bleaching

Soldering Iron Heated with Gas

Convenient Device for Articles of Jewelry

Patent Claims - November 2, 1861

Issued from the United States Patent Office

Recent American Inventions

To Our Readers