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Scientific American Magazine Vol 101 Issue 21

Scientific American Magazine

Volume 101, Issue 21

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Features

The Limit of Rapid Transit

Acceleration of Long-Distance Express Service

The New Fourteen-Inch Army and Navy Guns

The New British and German “Dreadnoughts”

Purity of Catskill Water Supply

The Other Half of the Cullinan

Electricity

Science

Engineering

A “Dreadnought” of 1863

Something New in Concrete Block Making

M. H. Hunting

Power Indicator for Internal-Combustion Engines

The Solar and Lunar Eclipses of 1909

Frederic R. Honey

Why Watch Springs Break

Railway Motor Cars

Another Evil of Deforestation

How Lemon Oil Is Made

Frank N. Bauskett

Artillery for Airship Attack

Wireless Communication with Balloons

The Wellcome Tropical Research Laboratories

An Improved Steam Trap

A New Grain Bin Construction

Patent Department

Oddities in Invention

Combined Timer and Distributer for Internal-Combustion Engines

Departments

Correspondence

Recently Patented Inventions

Notes and Queries

Index of Inventions

Patents

New Books, Etc.