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Features

Mid Ocean Wireless Telegraph Station

Needless Annoyances in Ferryboat Travel

Some Further Gunnery Experiments with the "Belleisle"

New Method of Armor Plate Making

The Amount of Water Used in Irrigation

Military Photography

How Ostrich Feathers are Culled

The De Forest System of Wireless Telegraphy

A Smokeless Automatic Stoker

A Group of Indian Masks

By Frank Yeigh

Mont Pelée in Eruption

By E. C. Rost

Patent Department

Improved Grain Door

Heater and Boiler

System for Ventilating Tunnels

Departments

  • Departments

    Business and Personal Wants

  • Recently Patented Inventions - August 16, 1902

  • Index of Inventions - August 16, 1902

  • New Books Etc. - August 16, 1902

  • Notes and Queries - August 16, 1902

  • Patents - August 16, 1902

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