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Features

Porcelain Manufacture in New York

Crossing the Boundary of the Experimental Evidence

Foreign Exhibitors at the Centennial

The Metallurgy of Iridium

A Variable Screw

American Porcelain

The New Revelations of a Snow Flake

The Fireman's Respirator

Improved Lewis

A New Steam Launch

A Three-Wheeled Omnibus

Scientific and Practical Information

Improved Center Draft Tongue for Reapers and Mowers

Reid's Automatic Hatchway

Improved Mining Dial

Improved Pipe Joint

The Crane

The Volume and Weight of Distilled Water at Different Temperatures

By Richard H. Buel

Recent American and Foreign Patents - March 20, 1875

Decisions of the Courts - March 20, 1875

Canadian Patents - - March 20, 1875

Communications Received - March 20, 1875

Departments

  • Departments

    Business and Personal - March 20, 1875

  • Notes and Queries - March 20, 1875

  • Index of Inventions - March 20, 1875

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