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Features

The Modern Gold Ship

How it has Invaded the Land of California.

By George Ethelbert Walsh

An Automobile Vacuum Cleaning Plant

A Substitute for the American Horse-Drawn Type by the Scientific American's English Correspondent.

An Electrolytic Rectifier for Amateurs

How it Can be Made at Home

By Frederick E. Ward

Varnish for Wicker Work

Some Practical Suggestions on a Misunderstood Subject

Soldering and Soldering Processes

The Form of Solders

The Nile-Red Sea Railroad

The Building of a $7,000,000 Line Through a Waterless Land

By Harold J. Shepstone

A New Race of African Pigmies

The Journal of the Disastrous George Expedition

The Atmosphere of Cities

An Investigation With a Practical Bearing on Public Health

By H. Henriet

Paper Pulp from Bamboo

Venomous Fishes

Poison as a Means of Defense

By A. Calmette

Artificial Fertilizers: Their Nature and Functions.—V

The Effect of Nitrogen, Phosphoric Acid, and Potash.

By A. D. Hall

Electrical Notes

Engineering Notes

Trade Notes and Formulæ

Departments

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    July 06, 1907

    Think Outside the Gift Box