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Removal of Aerial Electric Wires in New York

Delay in Granting Applications for Patents

Position of the Planets in May

An Improved Railroad Snow Plow

Straub's Plan for a Sub-River Tunnel

The Berrie Paving Block

An Improved Oven Thermometer

An Improved Bake Pan

An Improved Building Block

An Improved Roller Stove Foot

An Improved Gate Fastening

An Improved Lightning Conductor for Fences

An Improved Hydrocarbon Burner

Improvement of the River Front of New York City

Remarkable Locomotive Explosion in Norway

Experiments in Magnetism

By Geo. M. Hopkins

The Twin Palms and Ancient Well of Los Angeles

Mercurial Jet Siphon

By T. O'Conor Sloane

To Inventors- April 27, 1889


  • Recommended

    New Books and Publications- April 27, 1889

  • Departments

    Recently Patented Inventions- April 27, 1889

  • Business and Personal- April 27, 1889

  • Notes and Queries- April 27, 1889

  • Index of Inventions- April 27, 1889

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