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Features

A Promising Type of Gun

Marconi Telegraphs on the British Fleet

Some Chemical Mysteries

The Design of Propellers

Extermination of the Mosquito

By John Chamberlain

Pan-American Meeting of the American Institute of Electrical Engineers

By William H. Hale

A Laboratory Apparatus for Liquefying Gases

A Simple Home-Made Lathe

By Budd A. Wright

The Manufacture of Matches

Distribution of Combined Electrical Energy

By Alton D. Adams

New 5-Inch Segmental Wire-Wound Gun for the United States Army

The Willis Avenue Bridge Over the Harlem River

How Money is Made

By Marcus Benjamin

The Wreck of the Santos-Dumont Balloon

Business and Personal Wants

READ THIS COLUMN CAREFULLY, You will find inquiries for certain classes of articles numbered in consecutive order. If you manufacture these goods write us at once and we will send you the name and address of the party desiring the information. In every case it is necessary to give the number of the inquiry. MUNN & CO.

Departments

  • Departments

    Recently Patented Inventions - September 7, 1901

  • New Books, Etc. - September 7, 1901

  • Notes and Queries - September 7, 1901

  • Index of Inventions - September 7, 1901

  • Patents - September 7, 1901

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Know Before You Vote