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Boston's Free Municipal Bathing Plant

By J. A. Stewart

The Physiological Basis of Mental Life

Origin of Arabic Numbers

Women Inventors

By George Ethelbert Walsh

Mechanical Influence in Architecture

Motor Vehicles for Heavy Loads

The Purification of Acetylene

By P. Wolff

Electrical Notes

Miscellaneous Notes

Engineering Notes

Trade Suggestions from United States Consuls

A Seismological Observatory and its Objects

By John Milne

The Cave of Padirac

Curious Effect of Mental Suggestion

Puma-Leopard in the Zoological Garden at Berlin

Flexible Films for Spectroscopic Photography

The Forest Tent Caterpillar

By Clarence M. Weed

Comparative Costs of Cable, Electric, and Horse Traction in New York

Plan for the Widening of New York East Side Streets

By N. J. Vander Weyde

A New Primary Battery Cell of Large Capacity and High Economy

Automatic Stop Brake for Vehicles

How to Figure a Chainless Gear


Radiation of Luminous Paint

The Scientific American Supplement. Index for vol. 47


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    June 24, 1899

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