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Improvement in Power Hammers, Novelties in Paris

Will the Coming Man Drink Wine?

The Arts and Manufactures of Savages

More about Submarine Exploration

Stone & Hebbert's Patent Tool for Fitting Hub-Bands

Polytechnic College of Pennsylvania

Physical Strength

Answers to Correspondents

Recent American and Foreign patents

Extension Notices

Facts and Conjectures

Sweetland's Patent Rotary Shelf Refrigerator


Mining and Tunneling by Machinery

The American Science Association

Some Things a Mechanic Should Know

Progress of Submarine Telegraphy

Patents and Claims


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August 26, 1868

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