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Improved Dovetail and Tenon Cutter

Great Heat

Bessemer and Gun-Metal

On Hardening Steel

Duration of Life Among the Jews

New York Water

Lacassagne & Thiers' Dry Galvanic Battery

Milk Which Does Not Yield Butter, and the Means to Remedy It

The Magneto-Electric Disk Telegraph

Our Canals and Railroads

American Association for the Advancement of Science

Performances of Locomotives

American Paper-Hangings

Tool-Holders for Lathes

Qualities of Belting for Machinery

Interesting Correspondence

A Column of Interesting Varieties

Minerals in South-Eastern Missouri

Wear of Boilers

How to Fatten Chickens

Rain at Different Elevations

California Coal

Improved Scroll-Sawing Machine

Improved Wind and Water Wheel

The Armstrong Gun--Forging Large Masses of Iron and Steel

What is Science ?

A Great Water-Power in Market

The Fathers of Philosophy--IX

Agricultural Fairs for 1859

Western Railroads

Patent Claims

Issued from the United States Patent office

Foreign Summary--Metals and Markets


Iron Railroad Bridges

Improved Lubricating Device

Improvement in Key-Boards


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