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Improved Railroad Grader

The Properties of Light and Color

The American Exhibit at the Coming Paris Exposition

The Engineers' Examination of the Niagara Suspension Bridge

The Great Suspension Bridge Between New York and Brooklyn

Adjusting Connecting Rod Brasses

Singular Explosion of an Electrical Machine

A Screw Snow Plow

Photographer's Retouching Desk

A New Soda-Carbonating Apparatus

Improved Grain Sampler

The Propagation of Nerve Excitements


Adee's Improved Trap

New Mode of Stopping Leaks in Boiler Tubes

Robertson's Cradle Attachment for Bedsteads

A New Perfume Bottle

The City of Florence, Italy

Decisions of the Courts

New Miscellaneous Inventions

Recent American and Foreign Patents

New Textile Invention

New Woodworking and House and Carriage Building Inventions

New Agricultural Inventions

Communications Received


  • Departments

    New Books and Publications

  • Business and Personal

  • Notes and Queries

  • Index of Inventions

  • Patents

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April 14, 1877

Of Shamrocks and Science

Happy St. Patrick’s Day