Scientific American Magazine

Sanded Cotton

Improved Atmospheric Hammer

Abortion in Cows From Ergot

White Lead in Philadelphia

Improved Steam Riveting-Machine

Machines for Sweeping Streets

Coal Oil--Secret Inventions

Notes on the Great St.Louis Fair

“The Hammer.”--Gross Plagiarism

Notes on Foreign Inventions

Extracting Silver From its Ores

Pennsylvania Rock Oil

Influence of Different Kinds of Manure on Herbage

A Column of Interesting Varieties

Improved Cap and Lantern

Maillefert's Aerostatic Tubular Diving-Bell

Travis' Steam Governor

Editorial Correspondence

Reform of the Patent Laws

A Beetle in a Traveler's Ear

Mare's Nests in Porkopolis

Patent Cases

Weekly Summary of Inventions

Foreign Summary--News and Markets

Patent Claims

Machine for Sawing Out Barrel Heads

Opening of the Cooper Institute

The Great Balloon

Notes and Queries