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

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

Rotary Engines

Candles, Old and New

The Venetian Silkworm Industry

Barclay's Printing Telegraph

Interrupters for Induction Coils

The Present Status of Electric Furnace Working

Electrical Notes

Engineering Notes

Patents!