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A Reply to the New York "World"

Report of the Commissioner of Patents for 1888

Official Trial Op the Gunboat Yorktown

An Improved Brake Shoe for Railroad Cars

An Improved Wire Tightener

An Improved Steam Heater

A Device for Sharpening Stone-Cutting Tools

A Device for Piercing Ears and Inserting Earrings

An Improved Axle

An Improved Fire Escape

An Improved Guard for Step Ladders

An Improved Plow Clevis

An Improved Railway

Gun Cotton-Its History, Manufacture, Use

By Karl Rohrer

Test of the Cast Steel Breech Loading Rifle of open Hearth Steel

Terraced Irrigation Process of Sewage Disposal

By T. O'Conor Sloane

The Jerboa

Simple Experiments in Physics

By Geo. M. Hopkins

To Inventors- February 23, 1889


  • Letters

    Correspondence- February 23, 1889

  • Recommended

    New Books and Publications- February 23, 1889

  • Departments

    Business and Personal- February 23, 1889

  • Recently Patented Inventions- February 23, 1889

  • Notes and Queries- February 23, 1889

  • Index of Invention- February 23, 1889

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February 23, 1889

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