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Combined Atlas and Blackboard, Ventilating Ships, and more

Miscellaneous Summary

How Sugar is Made From the Cane

Polytechnic Association of the American Institute

Obstructions of Charleston Harbor

Faulty Construction of Steam Boilers

A New Method of Locomotion


Water and Steam Cocks

Capt Ericsson's Wrought-Iron Gun

Special Notice

Patent Claims

Issued From The United States Patent-Office

Recent American Patent

Patents Granted for Seventeen Years!

Rates of Advertising

The Cheapest Mode of Introducing Inventions

Valuable Work for Inventors Patentees and Manufacturers

Improved Rotary Harrow, Improved Box Plane


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  • Notes and Queries

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