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Commerce on the Great Lakes

Our National Wastefulness

Labor Saving at Panama

Logging in the Northwest

By Raymond M'Bride

“Knots” in the Rings of Saturn

By S. A. Mitchell

The Clifden Station of the Marconi Wireless Telegraph System

The Largest Single Office Building in the World

The Quadruple Turbine Steamship “Mauretania”

Automatic Coupling for Brake Pipes

Patent Department - November 23, 1907

A Faucet Connection for Generating Electricity

Water Elevator for Windmills

Improved Ditching Plow


  • Letters

    Correspondence - November 23, 1907

  • Departments

    Recently Patented Inventions - November 23, 1907

  • Index of Inventions - November 23, 1907

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