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Features

Improved Gap Lathe

The Centennial Surplus

Dual Life

A Bull on the Track

Alleged Magneto-Photography

Remarkable Results of Evaporation and Rainfall

Straightening Saws

Important Observations on the Rocky Mountain Locust, Or Grasshopper Pest of the West

By C. V. Riley

The British Ironclad Alexandra

A New Hydraulic Engine

Improved Yard Stick and Bias Measure

Martin's Gas Regulator for Steam Boilers

Professor Gray's Telephone

The Friction of Plain Slide Valves

The Cat Teaser

New Miscellaneous Inventions

Recent American and Foreign Patents

New Mechanical and Engineering Inventions

Communications Received

Departments

  • Departments

    New Books and Publications

  • Notes and Queries

  • Business and Personal

  • Index of Inventions

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April 28, 1877

Help Us Reforest the Mississippi River Valley