SA Supplements

August 1898

Volume 46, Issue 1182supp

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Features

The Utilization of 110 Volt Electric Circuits for Small Furnace Work

Accompanied by DE't'ailed instructions for the
Production of Calcium Carbide and Other. directions and working notes

Nevil Monroe Hopkins

Our Knowledge of the Value of a Resistance

W. E. Ayrton

An American Smokeless Powder

Frederick H Mcgahie

Throwing Sticks

Library Schools

Profitable Toilet Preparations

New Constituent of Atmospheric air

William Ramsay, M. W. Travers

A Smoke Detector

R. M. Haseltine

The Reeves Twin Feed-Water Filter

The De Laval High Pressure Steam Boiler and Turbine

Combined Engines and Fans for the Admiralty

The Performance of the “Oregon's” Engines on their Great Run of 15,000 Knots

Engineering Notes

Miscellaneous Notes

Selected Formulæ

Physics without Apparatus—The Dice and Box

A Registering Solar Radiometer and Sunshine Recorder

George S. Isham

Natural History of the Locust

Photographic Surveying

Treatment of the Surface of Medals

A Classic Legacy of Agriculture

John Mills