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Method of Regulating the Speed of Wind Wheels, Mystery of the Great Pyramids, and more

The Geysers of California

Asphalt Pavement in Paris

The Expense of a Hero

Science Familiarly Illustrated

Vogelmann's Combined Step and Extension Ladder

Editorial Summary

Recent American and Foreign Patents

Answers to Correspondents

Extension Notices

New Publications

Stierle's Improved Globe Valve

Producing a Vacuum in Guns Before Firing

Jarecki's Lubricating Cup

Robinson's Corn Husking Shield

Engines and Boilers--Hydrogen in Boilers, Burning Boilers, Setting Boilers

The Coal Production of England

Fair of the American Institute

The East River Bridge

Patent and Claims

Editorial Correspondence

Pending Applications for Reissues


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