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Features

The Electrical Tower at the Pan-American Exposition

By Edward Hale Brush

Views of the Pan-American Exposition

Australian Irrigation Farms

Transmitter Using the Sine Wave for Cable Telegraphy

By Albert C. Crkhore and George O. Squter

American Engineering- Competition

Trade Suggestions from United States Consuls

Selected Formulæ

Trade Notes and Receipts

The Strange Feats of a Circus Horse

Tien-Tsin

Some Twentieth Century Problems

Fresh Water Aquaria

By L. Murbach

The German Antarctic Expedition

A Votive Adze of Jadeite from Mexico

Aniline Dyes Soluble in Fats

By Markfeldt

Tycho Brahe

A Railroad up Mont Blanc

Jasper R. Rand

Patents!

Departments

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    August 04, 1900

    Dads Love Science