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Features

A Reply to the New York "World"

Official Trial Op the Gunboat Yorktown

Report of the Commissioner of Patents for 1888

An Improved Steam Heater

An Improved Brake Shoe for Railroad Cars

An Improved Wire Tightener

A Device for Piercing Ears and Inserting Earrings

A Device for Sharpening Stone-Cutting Tools

An Improved Railway

An Improved Axle

An Improved Fire Escape

An Improved Guard for Step Ladders

An Improved Plow Clevis

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

Departments

  • Letters

    Correspondence- February 23, 1889

  • Recommended

    New Books and Publications- February 23, 1889

  • Departments

    Notes and Queries- February 23, 1889

  • Business and Personal- February 23, 1889

  • Recently Patented Inventions- February 23, 1889

  • Index of Invention- February 23, 1889

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Why Do Facts Fail?

Why Do Facts Fail?

Deconstructing Denial