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The East River Bridge

Dr. Henry Draper's Recent Discoveries in Spectroscopic Analysis

Indicating Steam Engines

Gail Borden

Steam on Canals

Proceedings of the Patent Convention

A Year's Inventive Progress

Psychic Force

Scientific and Practical Information - January 31, 1874

Electro-Plating Balance

The Yama-Mai, or Oak Tree Silkworm

Hydraulic Engineering Extraordinary

The Canopus Stone

The Silver Mines of Peru

By Professor James Orton

The Baffle Drill-Proof Safe

Improved Furnace Bridge Wall

Improved Patent Candy Cutter

Overhead Steam Cranes for Dock Purposes

Decisions of the Courts - January 31, 1874

United States Circuit Court--Southern District of New York PATENT GRAIN AND GRASS HARVESTERS.—CYRENUS WHEELER JR., vs. CYRUS H. MCCORMlCK.

Recent American Foreign Patents - January 31, 1874

Answers Correspondents - January 31, 1874

Communications Received - January 31, 1874

Canadian Patents - January 31, 1874


  • Letters

    Correspondence - January 31, 1874

  • Recommended

    New Books and Publications - January 31, 1874

  • Departments

    Business and Personal - January 31, 1874

  • Index of Inventions - January 31, 1874

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