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Features

Application of the Coherer to Detection of Storms

The Erie Canal Muddle

New Products in the Glass Industry

New Chemical Compounds

Improved Process of Duplicating Phonograph Records

Local Conditions Favorable to the Cotton Industry of the South

A Moving Grazing Pen

Stern-Wheel Steamers on the Mississippi River

Electrical Gyroscopes

By Howard B. Dailey

The Present State of X-Ray Work

By William C. Peckham

Construction of the New East River Bridge

Modern British Ordnance

By Waldon Fawcett

Making Large Plaster Casts

By J. H. Collins

A Completely Inclosed Arc Lamp of Small Size

A Machine for Cleaning Blackboard Erasers

A Novel Haystacker and Derrick

A Pen with Increased Ink Capacity

Business and Personal Wants

Departments

  • Departments

    Science Notes - April 20, 1901

  • Correspondence - April 20, 1901

  • Recently Patented Inventions - April 20, 1901

  • Index of Inventions - April 20, 1901

  • Notes and Queries - April 20, 1901

  • Patents - April 20, 1901

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April 20, 1901

See the World from a Different Perspective

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