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SA Supplements Vol 59 Issue 1534supp

SA Supplements

Volume 59, Issue 1534supp

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Features

Science Notes - May 27, 1905

The Hydraulic Power Works on the River Glommen, Norway

By the English Correspondent of Scientific American

Reinforced Concrete

The Modern Gas Engine

The Velocity of Propagation of X-Rays

Lead Pencils we use every Day

Copper as an Algicide and Disinfectant in Water Supplies

Karl F. Kellerman

A Little-Known Property of the Gyroscope

Limits of Sensibility of Odors and Emanations

An Artist's Prophecy

Desert Plants as a Source of Drinking Water

Frederick V. Coville

Rotary Engines

The Venetian Silkworm Industry

Candles, Old and New

Barclay's Printing Telegraph

Interrupters for Induction Coils

The Present Status of Electric Furnace Working

Charles F. Burgess

Electrical Notes

Engineering Notes

Patents!