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The Arnold System of Electrical Traction

Municipal Architecture and the Elevated Railway

Vocal Sounds of Fishes

By Charles Frederick Holder

A Punch Centering Device

By Thomas C. Harris

The Inclined Plane of the Morris Canal

Making a Photographic Lens

Acetylene Searchlights for Automobiles

Use of Photographs as Evidence

By James G. McCurdy

The Improved Electrograph--A Fac-Simile Telegraph

Some Curious Homes

De Bradsky Airship Disaster

By the Paris Correspondent of the Scientific American

Business and Personal Wants


  • Departments

    Science Notes - November 15, 1902

  • Recently Patented Inventions - November 15, 1902

  • Notes and Queries - November 15, 1902

  • Index of Inventions - November 15, 1902

  • New Books, Etc. - November 15, 1902

  • Patents - November 15, 1902

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November 15, 1902