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A Steam Navvy

The Limits and Powers of Vision


The Banian Tree

Volpicelli's New Theory of Electro-Static Induction

Manufacture of the Harvey Torpedo

Pneumatic Elevation in Mines

Improved Paper-Pulp Engine

A New Lecture Experiment

By E. J. Hallock

The Secrets of the Mysterious Clocks

A New Method of Secret Writing

Frost's Variety Self-Centering Chuck

Improved Ballasting Tube for Vessels

Improved Gauge

An Artificial Mammoth

An Interesting Marmoset

Recent American and Foreign Patents

New Mechanical and Engineering Inventions

Decisions of the Courts

New Miscellaneous Inventions

New Agricultural Inventions

New Woodworking and House and Carriage Building Inventions

New Household Inventions

Communications Received


  • Departments

    New Books and Publications

  • Index of Inventions

  • Notes and Queries

  • Business and Personal

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June 30, 1877

Of Shamrocks and Science

Happy St. Patrick’s Day