Skip to main content

Features

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

The Geysers of California

Asphalt Pavement in Paris

Editorial Summary

Vogelmann's Combined Step and Extension Ladder

The Expense of a Hero

Science Familiarly Illustrated

Recent American and Foreign Patents

Answers to Correspondents

New Publications

Extension Notices

Jarecki's Lubricating Cup

Stierle's Improved Globe Valve

Robinson's Corn Husking Shield

Producing a Vacuum in Guns Before Firing

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

The East River Bridge

The Coal Production of England

Fair of the American Institute

Editorial Correspondence

Patent and Claims

Pending Applications for Reissues

Departments

  • Departments

    Correspondence

  • Business and Personal

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format
September 28, 1867

See the World from a Different Perspective

Subscribe to Scientific American MIND