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The Effect of the Sea Upon Climate

Elevation of Outer Rail on Curves

Concrete and Crushed Rock

British Merchant Marine and the Commerce Destroyer

The Nickel Ore Mines of Canada

A Severe Earthquake in South America

Wanted: Brains to Dissect

By Charles Stirrup

New Asteroid Camera at the Naval Observatory

By C. H. Claudy

Finishing Touches to the New Croton Reservoir

Japanese Military Sanitation and Hygiene

By Baron K. Takaki

The British Battleship "Dreadnought."

A Wheel Which Carries Its Own Track

By F R. Houssay

An Automatic Street Sweeper and Sprinkler

Ore Stamp Mill

Improved Vehicle Spring

Check Attachment for Pulleys and Chocks

Car Axle and Wheel

Business and Personal Wants


  • Departments


  • Recently Patented Inventions

  • Notes and Queries

  • Index of Inventions

  • Patents

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August 25, 1906

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