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Direct Acting Steam and Hydrostatic Press

The New York Industrial Exhibition

The Henderson Iron Process

Losses of Power in the Steam Engine. Where it May be Improved and to What Extent

Government Telegraphy

Corn as Fuel

Art Treasures from Cyprus--English Criticism on their Destination

Patent Business in Congress

Friction of Journals

New Theory of the Aurora

The Anti-Sea-Sick Ship

Professor Tyndall on Light--Second Lecture

Improved Blast Furnace

The Lyons Exposition Elevated Railway

The Great Laxey Water Wheel

The Progress of Chemistry in 1872

A Gigantic Fire Engine

Scientific and Practical Information

Recent Patent Decisions

Recent American and Foreign Patents

Under this heading we shall publish weekly notes of some of the more prominent home and foreign patents.

Answers to Correspondents


  • Departments


  • New Books and Publications

  • Business and Personal

  • Index of Inventions

  • Notes and Queries

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January 11, 1873

20% Sitewide for President's Day