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The Stratifications of Hydrogen

By William Crookes

The Victor Hugo Centenary

A new Carbureter

The new Bermuda Floating Dock

Contemporary Electrical Science

Time Required to Extract Precious Metals

Mine Explosions

A bit of the “Ancient” History of the Isthmian Canal Problem

By John Meikle

Iron and Steel Exports

Use of Eyeglasses in the Army

The Prince Regent Theater, Munich

Danish West Indies

The Siegfried Performance in Paris

On the Cheapest form of Light.—From Studies at the Allegheny Observatory

By S. P. Langley and F. W. Very


Choice of Phosphatic Fertilizers

The Hands of the Aye-Aye

The Padlocks of Indian Chests

The Modern Walls of Jerusalem

The Eastern Interior Coal Fields

Trade Suggestions from United States Consuls


Selected Formulæ


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    March 29, 1902

    20% Sitewide for President's Day