Features
Valuable Receipts
An American Shipbuilder on Iron-Clad Frigates
The Proportions, Form and Dimensions of the Several Classes of War-Ships for Modern Service
Polytechnic Association of the American Institute
What Are Paper Consumers to Do?
A Floral Patent
Brief Extracts From Letters
Funston's Pencil Sharpener
Value of Little Patents
The Polytechnic Association
Seventeen Thousand Patents Secured Through Our Agency
A Visit to Our Workshops--The Continental Iron Works
Which Are the Best War Ships?
The Gold Mines of California of No Value to the World
Debating Societies
The Condition of Our Iron-Clad Vessels
How to Choose and Keep a Rifle
Recent American Inventions
Patent Claims
To Our Readers
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