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The World's Columbian Exposition

The New Hydrogen Miner's Safety Lamp


By F. Clowes

Skim Milk for Manufacturing Purposes

By J. Carter Bell

The Telectroscope

By Leon Le Pontois

Improvements in Tool Holders and Cutting Tools

The Cockatoos

The use of Poisons as Fungicides and Insecticides

By L. R. Taft

Among the Cliff Dwellers

By Clement L. Webster

Novel Theory of the Moon's Surface


Useful Engineering Books

The Loss of Nitrogen in Manures

By A. Muntz and A. Ch. Girard


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    June 10, 1893

    Of Shamrocks and Science

    Happy St. Patrick’s Day