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Features

An Exhibit of Gyratory Rock and Ore Crushers in the Mines Building

By St. Louis

The Aeroplane

By M. Rudolphe Sorean

Briquetting Fuel Material

By George E. Walsh

Leather from Walrus Skins

By Charles H. Stevenson

Sewage Purification

By C. M. Ginther

A Gasoline-Electric Automobile

By Emile Guarini

Usefulness of the American Toad

By A. H. Kirkland

The “Globe” Curtis Letter on the most Valuable Source of Wealth in the Philippines

Anti-Fouling Compositions

A 1,000-Horse-Power Compound French Engine and Dynamo

By the St. Louis Correspondent of the Scientific American

By St. Louis

Geronimo at the World's Fair

By the St. Louis Correspondent of the Scientific American

By St. Louis

Mosely Educational Commission

Agriculture in Japan

Magnetic Alloys of Non-Magnetic Metals

The Janus Telephone System

By Alfred Gradenwitz

Some New Experiments with Cathode Rays

Contemporary Electrical Science

A New Process of Manufacturing Silicate-of-Lime Stone from Sand

By the English Correspondent of the Scientific American

A Pea-Canners' Problem Solved

By F. H. Hall

Electrical Notes

Selected Formulæ

Engineering Notes

Patents!

Trade Notes and Recipes

Departments

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    August 27, 1904

    Think Outside the Gift Box