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Silvering Animal Vegetable, and Mineral Substances

Improved Machine for Making Cigars

Adulterated Food and Medicines

Detecting Adulterous Substances in Beer

Artificial Duck-Hatching


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


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    Notes and Queries

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