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
A Floral Patent
What Are Paper Consumers to Do?
Brief Extracts From Letters
Funston's Pencil Sharpener
Value of Little Patents
The Polytechnic Association
Which Are the Best War Ships?
Seventeen Thousand Patents Secured Through Our Agency
A Visit to Our Workshops--The Continental Iron Works
The Gold Mines of California of No Value to the World
Debating Societies
How to Choose and Keep a Rifle
The Condition of Our Iron-Clad Vessels
Recent American Inventions
Patent Claims
To Our Readers
Departments
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Correspondence
Notes and Queries
