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Adulterated Food in England

Boring in Hard Rocks

Scouring Castings of Iron.--Coating with Zinc

A Man of Science Gone

Coal of Recent Formation

Straining Saws by Atmospheric Pressure

The Patent Office Once More-Defence of the Secretary of the Interior

Durability of Iron Ships

Lanterns for Lighthouses

Benefits of the New Steamboat Law

List of Patent Claims

Great Ocean Steamers

Military Literature--America Ahead

New England Industrial Exhibition

Barlow's Planing Machine.--Erratum

Recent Foreign Inventions

The Yellow Fever

Mechanics Institute

California Minerals

National Agricultural Exhibition

Important to Mechanics.--Woodworth's Planning Machine

Improved Gang Saw Mill

The Woodworth Patent Again

Great Fair of the American Institute

Reminiscences of the Paris Industrial Exhibition No. 4

Splendid Cash Prizes!

Correcting the Mariner's Compass

Improvement in Cotton Gins


  • Letters

    To Correspondents

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