Features
Improved Machine for Making Cigars
Adulterated Food and Medicines
Detecting Adulterous Substances in Beer
Artificial Duck-Hatching
Eagles--Ornithology
The Trans-Mundane Telegraph Line
The Utility of High Premiums
Walking on the Water
California Matches
Reliable Recipes
Hot-Air Ovens for Iron Furnaces
Stiles's Improved Toe-Stretcher
Curious Coincidence of Natural Laws
Dangers of Ballooning
Shank's Biscuit Board
Hours of Labor
Animal Oxydation
Notes on Foreign Inventions
The Amalgamation and Gilding of Aluminum
Electrical Invention
Iron and Its Useful Applications
Another Iron Ship!
The Four Organic Elements
A Column of Interesting Varieties
Wood's Oscillating Engine
Do We Know How Magnetism is Produced
Electrotyping Our Paper
The State Fair
Fair of the American Institute
How to Obtain Letters Patent
Weekly Summary of Inventions
Foreign Summary-Metals and Markets
Patent Claims
Improved Method of Tanning
Water-Gas at Wilmington
Departments
- Departments
Notes and Queries
