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Machine Grinding

The Progress of Mosquito Extermination

Santos-Dumont and the Exposition Authorities

A Vegetable Butter

Historic Forest Fires

The Preparation of Cereal Foods

The Submarine Torpedo Tube

The Gordon Bennett Cup Race

By Special Correspondent of the Scientific American

A Curious Formation of Horse's Skull

By J. C. Wraith

The New Nemethy Flying-Machine and the Principle of Its Construction

By Alfred Gradenwitz

Improved Screwdriver

Business and Personal Wants


  • Departments

    Science Notes - July 9, 1904

  • Index of Inventions - July 9, 1904

  • Recently Patented Inventions - July 9, 1904

  • Patents - July 9, 1904

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Dwindling Supply. Increasing Demand.

Dwindling Supply. Increasing Demand.

Solving the Water Crisis