Scientific American Magazine Vol 81 Issue 25

Scientific American Magazine

Volume 81, Issue 25

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Features

Tunnels Versus Bridges for Rapid Transit

Opening of the New St. Lawrence Canal Locks

"The Wish Is Father to the Thought"

Relation of Rainfall to Boiler Scale

"Advance Sheets" of the German Consular Reports

Tropical Products of Our New Possessions

New York's Trade in Wild Animals

Railway Safety Appliances - December 16, 1899

Ancient Egyptian Porcelain

Our Exports of Iron and Steel

The Automobile Cup

The Naval Guns at Ladysmith

Hauling Logs by Motor Trucks

A Tool for Reloading Empty Cartridge Shells

The Engines of the First-Class Battleship "Wisconsin"

The Trojan Horse at the Paris Opera House

A New Safety Valve

A California Verde Antique Quarry

Charles F. Holder

A Novelty in Railroad Collisions

A New form of Fire-Escape and Lowering Apparatus

A Switch-Throwing Device for Cars

How Sculptors Change the Scale of Their Statues

Departments

Correspondence - December 16,1899

Recently Patented Inventions - December 16, 1899

Notes and Queries - December 16, 1899

New Books, Etc - December 16,1899

Business and Personal - December 16, 1899

Index of Inventions - December 16,1899

Patents - December 16, 1899