Volume 6, Issue 2
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Features
Baird's Spark Arrester
Central Railroad
Carpenters' Improved Bench Hook
The First Railroad in Wisconsin
Another Splendid Locomotive
Improved Shooting Harpoon
Skill of Dentists
Coal
American Association for the Advancement of Science
British Association for the Advancement of Science
Tea Cultivation
Washington Irving's British Copyright
Compressed Air Engine
The Voltaic Battery
Philadelphia Art-Union Plate
Propellers
Improvement in the Manufacture of Flour
No. 1 Vol. 5, Sci. Am
Improvement in the Purifying of Gas
Ocean Steamers
Interesting to Inventors
Appropriation for Electro Magnetism
Invention for the Opening of Iron Shutters of Stores
New and Improved Kind of Soap
Our Foreign Correspondence
The Sea Serpent
Prizes by the American Institute
Genius is Democratic
A Question for the Curious—Molten Metals
Machine for the Artificial Production of Ice
An Improved Water Wheel
War about the Materials of the Washington Monument
To Our Contemporaries
The Sinking of Ice
Steam between Philadelphia and Liverpool
The Quickest Passage
Iron Direct from the Ore
List of Patent Claims
How to Lengthen a Leg
An Insect Scourge
Caving in of Mines
Kanawha, Va., Salines
Van Kuran's Patent Railroad Car Wheel
New Prospectus
To Mechanics, Inventors, and Manufactures