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The American Bicycle—Its Theory and Practice of Construction

By Leonard Waldo

The Palace of War and of the Navy at the Exposition of 1900

Gas and Petroleum Engines at the Brussels Exhibition

Acetylene as an Illuminant

National Debts

A Photographic Impact Testing Machine for Measuring the Varying Intensity of an Impulsive Force

By B. W. Dunn

Gliding Experiments

The Mineral Statistics for 1897

British Fresh Water Mites

The Days of Rest of Prehistoric Man

Cattleya Empress Frederick, Var. Leonata

Temperature in Deep Mines

Engineering Notes

Selected Formulæ

Miscellaneous Notes

A Unique Case of Complete Removal of the Stomach—Successful Œsoph-Ago-Enterostomy—Recovery

Italians in America



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    January 15, 1898

    20% Sitewide for President's Day