Features
Lunar Assistance
Observations on the Gold Fields of Venezuela and Geology of the State of Guayana, Read before the Lyceum of Natural History of N. Y.. by R. P. Stevens, Nov. 2D, 1868
Ladenberger's Patent Wagon Brake
Prof. Doremus on the Creation
Tamkin's Automatic Heat Damper
The Best Modes of Testing the Power and Economy of Steam Engines
Ice Machines
Editorial Summary
Manufacturing, Mining, and Railroad Items
Recent American and Foreign Patents
Answers to Correspondents
Removal of the Broadway Bridge
Poisonous Drugs and Cosmetics
A National Invention Bureau
Facilities for International Communications
Our State Canals--Engineering Suggestions
A Hint to Our Inventors
Annual Rainfall in Different Portions of the Earth
How to have a Cheap Hot Dinner
Patents and Claims
Patent Offices
Departments
- Departments
Correspondence
Business and Personal
