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Features

The Mitchell Safety Steam Generator

Decision of an Important Patent Litigation

The Suppressed Member Again

The Genesis of the Horse

The Agassiz Memorial

How a Great Discovery Was Made

Artesian Wells

The Origination of Screw Propulsion

Scientific and Practical Information - April 18, 1874

Horton's Improved Chuck Jaw

New Electric Disengaging Gear for Knitting Machines

Dr. Brown Sequard on Nerve Force

The Ammonia Ice-Making Process

Improved Steam Pump

In the Laboratory with Agassiz

Improved Plane Guide

Matson's Safety Combined Whip and Rein Holder

Magnifying Insect Case

Lucetti's Italian Ice Cream Freezer

Casting a Five Hundred Tun Anvil

The Solar Counter

Decisions of the Courts - April 18, 1874

Astronomical Notes - April 18, 1874

Recent American and Foreign Patents - April 18, 1874

How Shall I Introduce My Invention ?

Answers to Correspondents - April 18, 1874

Communications Received - April 18, 1874

Canadian Patents - April 18, 1874

Departments

  • Letters

    Correspondence - April 18, 1874

  • Recommended

    New Books and Publications - April 18, 1874

  • Departments

    Business and Personal - April 18, 1874

  • Index of Inventions - April 18, 1874

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April 18, 1874