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New Chemical Compounds

New Products in the Glass Industry

The Erie Canal Muddle

Improved Process of Duplicating Phonograph Records

Application of the Coherer to Detection of Storms

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 Machine for Cleaning Blackboard Erasers

A Novel Haystacker and Derrick

A Pen with Increased Ink Capacity

A Completely Inclosed Arc Lamp of Small Size

Business and Personal Wants


  • 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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