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Features

A New Switch Controller

Improvement in Sugar Manufacture

Citric Acid-From the Lime and Lemon

Six Months of Scientific Progress

The Tide Water Oil Pipe Line Completed

The Brewers' Convention

Insects as Medicine

The New Steamship Arizona

The Australian Exhibitions

The Krupp Electric Lamp

New Shop Saw

A New Invalid Bed

Amateur Mechanics

Easily Made Slide Best

Miscellaneous Inventions

Recent Mechanical Inventions

A New Rotary Engine

The Cyclodes

Fastening and Releasing Device for Cattle Stalls

The Electric Pen

A New Sounder

New Agricultural Inventions

An Old Concern Re-Established

Communications Received

Departments

  • Departments

    Notes and Queries

  • Business and Personal

  • New Books and Publications

  • Index of Inventions

  • Patents

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June 28, 1879

Confronting Common Wisdom