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