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Features

Improved Rotary Engine

Polytechnic Association of the American Institute

The Mining of Coal by Machinery

The Manufacture and Cutting of Flint Glass

Storms

Valuable Receipts

A Visit to Pompeii

The Iron-Clad Steam Battery, “Roanoke”

Frictional Gearing

Progress of Modern Manufactures

The Preparation of Food

Lancashire--Its Population and Manufactures

A Large Screw Propeller

Sanitary Condition of New York

Miscellaneous Summary

Valuable Work for Inventors, Patentees and Manufacturers

Discoveries and Inventions Abroad

Patent Claims

Recent American Patents

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    Notes and Queries

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January 31, 1863

Confronting Common Wisdom