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Scientific American Magazine Vol 11 Issue 23

Scientific American Magazine

Volume 11, Issue 23

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Features

Improved Air Engine, Preservation of the Teeth

A Visit to the Great Volcano of Kilauea

The Military Railroad System of the United States

Miscellaneous Summary

Professor Treadwell on Hooped Cannon

Olmstead's Oil Can

American Machine Tools

Potatoes in Fat

The Scientific American for the Ensuing Year

Extension of Patents--For Whose Benefit They are Granted

Classical vs. Scientific Education

Aluminum Bronze Bearings

A Hint for the Holidays

Recent American Patents

Patent Claims

Recent English Patents

Fogle's Oil Cup

Departments

Correspondence

Notes and Queries