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Features

Mid Ocean Wireless Telegraph Station

Some Further Gunnery Experiments with the "Belleisle"

Needless Annoyances in Ferryboat Travel

New Method of Armor Plate Making

How Ostrich Feathers are Culled

The Amount of Water Used in Irrigation

Military Photography

A Smokeless Automatic Stoker

The De Forest System of Wireless Telegraphy

A Group of Indian Masks

By Frank Yeigh

Mont Pelée in Eruption

By E. C. Rost

Patent Department

Heater and Boiler

System for Ventilating Tunnels

Improved Grain Door

Departments

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    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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August 16, 1902

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