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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

Hamilton's Water Elevator

Denn's Improved Gridiron and Cake Baker

Hill's Locking Whip Socket

The Bessemer Process Under Pressure

The Bitricycle, a French Invention

Galmann and Ruhe's Improved Joist Protector

Obituary--Seth Boyden

Glazed Bricks for Building Purposes

Nature's Elevator

The Measurement of Water Power

Dualin--What is Claimed for It

Michael Faraday

Patent Office Decisions- April 9, 1870

Recent American and Foreign Patents- April 9, 1870

H. S. Patent Office- April 9, 1870

Answers to Correspondents- 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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