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Telegraphy and Telephony.—II

Recent Developments

By John Gavey

High and Low Water Alarms for Boilers

Ingenious Safety Devices

By W. H. Wakeman


The use of Celluloid in Microscopy

The Study of Solutions.—II

Past Theories and Future Research

By Louis Kahlenberg

Tests of the New Haven Freight Locomotives

The Testing of a Big Gun

“Caged” in Case of Bursting

The Shepherds of Palestine

By Harold J. Shepstone

Spinning Paper

The Government'S Money Laundry

How Old Paper Notes are Washed

By Thomas D. Gannawy

Modern Mathematical Methods

Principles as Distinguished From Processes

By E. W. Hobson

Practice and Theory of Aviation.—III

The Leading Aeroplanes

By Grover Cleveland Loening

Ship Cranes, Counterweights, or Locks

Some Canal Problems

Coal Briquetting in the Year 1909

Recent Government Statistics

Cross-Tie Industry in United States

Engineering Notes

Science Notes

Trade Notes and Formulæ


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    November 05, 1910

    20% Sitewide for President's Day