Skip to main content

Features

An Economical Coal-Handling Plant

The Construction of Simple Electroscopes for Experiments on Radioactivity

A Variable-Speed Gear

Giving All Speeds From Zero to a Maximum

The Chemistry of Patinas

By O. N. Witt

A New Secret Service Telephone

By the English Correspondent of SCIENTIFIC AMERICAN

A Novel Thermo-Electric Battery

By Emile Guarini

Quantity of Cotton Ginned in the United States

Armor-Plate Tests for the Latest Japanese Battleship

By Our English Correspondent

Stellar Brightness and Density

By J. E. Gore

Study of Lunar Photographs

By the Paris Correspondent of the Scientific American

Musical Instruments: Their Construction and Capabilities.—III

By A. J. Hipkins

Curious Insects of the Amazon

Oscillations of Shore Lines

Fishing in the Philippines

Our Sun and “Weather”

By William J. S. Lockyer

Atmospheric Pressure and Chronometry

From the French of Dr. Ch. Ed Guillaume, Associate Director of the Bureau of Weights and Measures, in La Nature

Trade Notes and Recipes

Engineering Notes

Electrical Notes

Patents!

Selected Formulæ

Departments

    Purchase To Read More

    Already purchased this issue? Sign In to Access
    Select Format
    May 06, 1905

    Feeling Dead Inside?

    Tear Into Our eBook