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Features

The Stevens Battery

The War

Directions to Army Surgeons on the Field of Battle

Quimby's Letter Box for Post Offices

Developments of Chemistry

The Oil Wells of Pennsylvania—Curious Spouting Phenomena

Steam Cultivation--Deep Plowing

Information as to the Patentable Novelty of Inventions

An Exciting Question--Boiler Explosions and their Causes

The Mechanic Arts in Central Africa

Patent Claims - August 31, 1861

Recent American Inventions

Instructions about European Patents

Departments

  • Letters

    Correspondence - August 31, 1861

  • Departments

    Notes and Queries - August 31, 1861

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