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Features

The Growth of our Railroad System

Guard Rails in the Subway

An All-Day Race between Battleships

The Mysteries of the Ocean Bed

The Bacterial Purification of Sewage

By Albert Glyndon

The New Gasoline Motor Car

The Flax Industry of To-Day

Progress of the New Jersey Tunnels and Subways

The Lifting Power of a Screw Propeller for Aeronautical Work

The Salmon Fisheries of the Northwest

By Day Allen Willey

A Novel Method of Dog-Shearing

An Improved Excavator

Depth Gage for Brace Bits

Business and Personal Wants

Departments

  • Departments

    The Heavens in December - December 9, 1905

  • Recently Patented Inventions - December 9, 1905

  • Index of Inventions - December 9, 1905

  • Notes and Queries - December 9, 1905

  • Patents - December 9, 1905

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December 09, 1905

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