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Scientific American Magazine Vol 39 Issue 23

Scientific American Magazine

Volume 39, Issue 23

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Features

The Sawyer-Man Electric Lamp

The Wastage of Carbon in Electric Lamps

Ventilation of Vessels

The Utilization of Petroleum

A Trade Mark Decision

The Largest Cash Vault in the World

Increasing Trade with Chili

American Contributions to Modern Artillery

Alum in Baking Powders

The Fusing of Carbon

Valvoline

Car Painting

D. D. Robertson

New Trunnion and Trimmer

New Time-Indicating Night Lamp

A New Lamp Extinguisher

An Improved Roofing

Paris Exhibition--Facade of Austria and Hungary

The Common Jacana

Astronomical Notes

Berlin H. Wright

American Institute Fair

To Inventors

Communications Received

Departments

Notes and Queries

Business and Personal

New Books and Publications

Index of Inventions

Patents