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Features

The Electrical Value of Wind Power

High Velocities and Gun Erosion

The Offer to Build the Panama Canal by Contract

The Suez Canal Explosion

Another North Pole Balloon Expedition

The Prevention of "Colds"

The Visiting British Fleet

The Long Island Railroad Electrified

By A. Frederick Collins

A Visit to the Volcano Poas

By Albert Rudin

An Automobile Economy Test

The Maximum of the Present Solar Cycle

By Rose O'halloran

Captive Hippopotami

An Automatic Bicycle Pump

Automatic Switch Thrower for Street Railways

Business and Personal Wants

Departments

  • Departments

    Correspondence - November 18, 1905

  • Notes and Queries - November 18, 1905

  • Recently Patented Inventions - November 18, 1905

  • Index of Inventions - November 18, 1905

  • Patents - November 18, 1905

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Dwindling Supply. Increasing Demand.

Dwindling Supply. Increasing Demand.

Solving the Water Crisis