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Features

Improved Hoisting Machine

Cheap Transit for Oil

Power Required to Drive Cotton Machinery

Morbid Mental Conditions

A Switch Accident

The Manufacture of Gem Stones

Scientific and Practical Information - July 25, 1874

A Safety Furnace

Gang Saw Improvements

Apparatus for Transplanting Trees

Practical Education - July 25, 1874

Earle's Improved Ice Creeper

New Ice Making Process

Improved Furnace for Melting Brass

A Novel Balloon Ascent

Decisions of the Courts - July 25, 1874

The New Steamer Britannic-A New Iropeller Improvement

Recent American and Foreign Patents - July 25, 1874

Answers and Correspondents - July 25, 1874

Communications Received - July 25, 1874

Canadian Patents - July 25, 1874

Departments

  • Letters

    Correspondence - July 25, 1874

  • Departments

    Bussiness and Personal - July 25, 1874

  • Index of inventions - July 25, 1874

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July 25, 1874

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