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Features

Automatic Steam Engine

A Gas-Propelled Boat

Our Coal Deposits--Their Formation and Extent

Electrical Fire Arms

Bisulphide of Carbon

An Objection to the Large Telescope Answered

Scientific and Practical Information

The Vienna Exposition

Pumping Engine

Wenham's Heated Air Engine

Fireproof Floor

The Belgian Dray

M'Grath's Patent Side Stick and Quoins

Improved Garden Hoe

Sanitary Notes--Food and its Preparation

Positive Circulating Vertical Tube Radiator

The Needle Valve Automatic Oil Feeder

Scotton's Patent Round Tree Box

Portable Steam Renovator

Whiffletree Stub

Adjustable Pulley Bolt

Tannate of Soda

Decisions of the Courts

United States Circuit Court--District of New Jersey

The Southern Canal

Recent American and Foreign Patents

Answers to Correspondents

Copyrights

Best Mode of Introducing New Inventions

Communications Received

Departments

  • Departments

    Correspondence

  • New Books and Publications

  • Notes and Queries

  • Business and Personal

  • Index of Inventions

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June 14, 1873

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