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Scientific American Magazine Vol 40 Issue 3

Scientific American Magazine

Volume 40, Issue 3

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Features

American Industries--No. 2

Hamilton S. Wicks

The Adulteration of Soft Soap

Patents in New South Wales

Over-Density of Population in Cities

Sun Spots and Commercial Crises

Boiler Feeders for Locomotives, Etc

Senate Bill 300.--Section 2

The Trademarks Quandary

Progress of the Swedish Arctic Expedition

How to Utilize Old Fruit Cans

Straub's Scientific Grain Mill

Easily Made Physical Apparatus

Geo. M. Hopkins

The Columbia Bicycle

The Luray Cavern

H. C. Hovey

Duplex Steam Pumping Engines

The Clipper Injector

The Chætodon

Early English Style of Piano at the Paris Exhibition

A New Method of Setting Boiler Tubes

Spreading Diphtheria by Kisses

The Gruey Gyroscope and the Gyroscopic Pendulum

To Inventors

Departments

Correspondence

Recent Inventions

Notes and Queries

New Books and Publications

Business and Personal

Index of Inventions