Features
Improved Atmospheric Hammer
White Lead in Philadelphia
Abortion in Cows From Ergot
Improved Steam Riveting-Machine
Coal Oil--Secret Inventions
Machines for Sweeping Streets
Notes on the Great St.Louis Fair
Notes on Foreign Inventions
Extracting Silver From its Ores
“The Hammer.”--Gross Plagiarism
Influence of Different Kinds of Manure on Herbage
A Column of Interesting Varieties
Pennsylvania Rock Oil
Maillefert's Aerostatic Tubular Diving-Bell
Improved Cap and Lantern
Travis' Steam Governor
Reform of the Patent Laws
Editorial Correspondence
Mare's Nests in Porkopolis
A Beetle in a Traveler's Ear
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
Departments
- Departments
Notes and Queries
