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Prospects of the New Erie Canal

Our Advancing Trade

Longitudinal Framing for the Herreshoff Cup-Yacht

Water-Tube Boilers in the British Navy

Sylviculture and the Suez Canal

Method of Detecting Hypo in Photographic Work

Automobiles in New York

The New Russian Battleship Czarevitch as She Will Appear When Completed for Sea

Electrically Illuminated Fountains

A Sugar Cane Reaper Wanted in Hawaii

Training School for New York Streetcar Motormen

The Omnigraph--An Instrument for Teaching Telegraphy

Hydraulic Electric-Car Brake

A Remarkable Salt Deposit

By Charles F. Holder

The Wentworth Cotton Gin

An Improved Pipe-Wrench

A New Wickless Oil Burner

Business and Personal Wants

To Inventors


  • Departments

    The Heavens in April

  • Correspondence - April 6, 1901

  • Recently Patented Inventions - April 6, 1901

  • Notes and Queries - April 6, 1901

  • Index of Inventions - April 6, 1901

  • Patents - April 6, 1901

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April 06, 1901

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