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Mr. Bessemer's Conservatory

Bells and Bell Towers

Mineral Deposits

By William T. Brigham

An Interesting Sketch of the Distinguished Aeronaut, John La Mountain

Denn's Improved Gridiron and Cake Baker

Hill's Locking Whip Socket

Hamilton's Water Elevator

The Bitricycle, a French Invention

The Bessemer Process Under Pressure

Galmann and Ruhe's Improved Joist Protector

Obituary--Seth Boyden

Dualin--What is Claimed for It

The Measurement of Water Power

Nature's Elevator

Glazed Bricks for Building Purposes

Michael Faraday

Patent Office Decisions- April 9, 1870

Answers to Correspondents- April 9, 1870

Recent American and Foreign Patents- April 9, 1870

H. S. Patent Office- April 9, 1870

Applications for Extension of Patents- April 9, 1870

Official List of Patents- April 9, 1870


  • Letters

    Correspondence- April 9, 1870

  • Departments

    Business and Personal- April 9, 1870

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April 09, 1870

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