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A Quart Measure in a Pint Pot

Earthquakes and Dam Construction at Panama

What are Atoms, Electrons, and Ions?

People Who Have Eaten Books

Proposed Bill for the Extension of Patents

Electrical Music

A Simple and Speedy Motor Sleigh

The New Cunarders

Artistic French Taxidermy

By Jacques Boyer

Boring Out Columns in Solid Rock

By L. Ramakers

New Type of Armor-Piercing Shell

A Puzzling Bit of Foundry Work

By C. Metcalf

The Walschaert Valve on American Locomotives

Business and Personal Wants - March 31, 1906

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...


  • Departments

    The Heavens in April, 1906

  • Correspondence - March 31, 1906

  • Index of Inventions - March 31, 1906

  • Recently Patented Inventions - March 31, 1906

  • New Books, Etc. - March 31, 1906

  • Patents - March 31, 1906

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