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London's “Tubes” the Novel Method of their Construction

Specially prepared for the Scientific American Supplement by our London Correspondent

The Expert Train Dispatcher

High Acceleration on Electric Railways: Results on the Liverpool Overhead Line

By Herbert C. Fyfe

New Mechanical Singing Birds

The New Cuban Telegraphic Service

By Chas. Minor Blackford

The Schroeder Contact Process of Sulphuric Acid Manufacture

III. Experimental Investigations and Observations

By Charles L. Reese


By A. C. Haddon

The Great Cost of Alaskan Mails

The Pearls of Western Europe

Colors for Soaps and Perfumes

Details of Construction of the Paris underground Railway Beneath the Place De L'Opera

The Underwriters' Laboratories

By Day Allen Willey

A Search for the Tiber's Treasures

Preserving the Ruins of Zimbabwe

Cultivation of India-Rubber Trees

Death Valley

By Oscar C. S. Carter

A Smoke-Washing Apparatus

New Sterilizing Filter


By Cyril Davenport

Electrical Notes

Miscellaneous Notes

Trade Suggestions from United States Consuls


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    August 22, 1903

    20% Sitewide for President's Day