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The “Tour Du Monde” at the Paris Exposition

The History of Photography in Natural Colors

American Engineering Competition

X. Stationary Engines

Railways in Spain

Contemporary Electrical Science

Trade Notes and Receipts

Selected Formulæ

Trade Suggestions from United States Consuls

Cod Fisheries of the Northern Pacific

How a Lion Attacks an African Kraal

The Latest Eruption of Vesuvius

The Oldest Library in the World

The Mycenæan House of the Double-Ax

The Mission of Science in Education

By John M. Coulter

The German Squadron in China

A Simplified Telemicroscope and Solar Microscope

American Trade and Shipping

The Coal Trade of the United States and the World's Coal Supply and Trade

“Production of Oxygenized water by Barium Bioxide and Carbonic Acid and the Renewal of the Barium Bioxide.”

New Application of Cold



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    September 22, 1900

    20% Sitewide for President's Day