We use cookies to provide you with a better onsite experience. By continuing to browse the site you are agreeing to our use of cookies in accordance with our Cookie Policy.

Skip to main content
Menu

    Features

    Purity of Catskill Water Supply

    Acceleration of Long-Distance Express Service

    The Other Half of the Cullinan

    The New Fourteen-Inch Army and Navy Guns

    The New British and German “Dreadnoughts”

    The Limit of Rapid Transit

    Science

    Engineering

    Electricity

    Something New in Concrete Block Making

    By M. H. Hunting

    A “Dreadnought” of 1863

    Power Indicator for Internal-Combustion Engines

    The Solar and Lunar Eclipses of 1909

    By Frederic R. Honey

    Railway Motor Cars

    Another Evil of Deforestation

    Why Watch Springs Break

    How Lemon Oil Is Made

    By Frank N. Bauskett

    Artillery for Airship Attack

    Wireless Communication with Balloons

    The Wellcome Tropical Research Laboratories

    Oddities in Invention

    Combined Timer and Distributer for Internal-Combustion Engines

    An Improved Steam Trap

    A New Grain Bin Construction

    Patent Department

    Departments

    • Departments

      Correspondence

    • Index of Inventions

    • Recently Patented Inventions

    • Patents

    • Notes and Queries

    • New Books, Etc.

    Purchase To Read More

    Already purchased this issue? Sign In to Access
    Select Format
    November 20, 1909

    See the World from a Different Perspective

    Subscribe to Scientific American MIND

    Subscribe