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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

New Mechanical Singing Birds

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

By Herbert C. Fyfe

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 Pearls of Western Europe

The Great Cost of Alaskan Mails

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

Colors for Soaps and Perfumes

The Underwriters' Laboratories

By Day Allen Willey

A Search for the Tiber's Treasures

Preserving the Ruins of Zimbabwe

Death Valley

By Oscar C. S. Carter

Cultivation of India-Rubber Trees

New Sterilizing Filter

A Smoke-Washing Apparatus


By Cyril Davenport

Miscellaneous Notes

Electrical Notes

Trade Suggestions from United States Consuls


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