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Rerolling Old Steel Rails

Nitro Cellulose vs Nitroglycerine Smokeless Powders

The North River Bridge Bill

The Smithsonian Report

The Baldwin-Ziegler Expedition to Franz Josef Land

Opening of the Pan-American Exposition

The New Assistant Commissioner of Patents

A Perpetual Motion Clock

Launch of the White Stab Liner "Celtic"

The Murray Page-Printing Telegraph

The Nile Irrigation Works

Siberia in the Glacial Age

Turkish Submarine Boat of the Nordenfeldt Type

Hofman's Flying Machine

A Simple Car Mover

Combination Metal and Wood-Working Machine

A Novel Fifth-Wheel

Business and Personal Wants


  • Departments

    The Heavens in May

  • Notes and Queries - May 4, 1901

  • Recently Patented Inventions - May 4, 1901

  • Index of Inventions - May 4, 1901

  • Patents - May 4, 1901

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May 04, 1901

Of Shamrocks and Science

Happy St. Patrick’s Day