Science Notes - January 21, 1905

The 1904 Paris Automobile Show.—II

By the Paris Correspondent of Scientific American Pivot system

Hard-Solder for Enameling Purposes

Resistance of Railway Trains

The Orling-Armstrong Electro-Capillary Recorder

By the English Correspondent of the Scientific American

Contemporary Electrical Science

Mines and Subterranean Torpedoes at Port Arthur

Some Refinements of Mechanical Science

Frozen Mammoth in Siberia

Breeding and Heredity

Composition of Gases from Mineral Springs, Helium, Etc., and Radioactivity

Tungsten: Its use and Value

A Porto Rico Forest Reserve

George Washington as an Engineer

On the Modern Reflecting Telescope, and the Making and Testing of Optical Mirrors

Ice-Breakers and their Services

Trade Notes and Recipes

Engineering Notes