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The Death of Friedrich Krupp

The Pennsylvania Railroad Tunnel

The Gun in Naval Warfare

Test of the Maximum Capacity of the Niagara Falls Tunnel

Restoration of the Parthenon

An American Parallel to the Tulip Craze in Holland

By Irving U. Townsend

Reversible Screw-Propeller

The Navipendulum Method of Experiment

Non-Freezing Hydrant

The New Plant of the Canadian Niagara Falls Company

By Orrin E. Dunlap

The Manufacture of Toys and Dolls

The New Monitor "Wyoming"

Guatemala's Earthquakes

By Thomas R. Dawley Jr.

An Experimental Mono-Rail Line

By Day Allen Willey

Business and Personal Wants


  • Departments

    Science Notes - December 6, 1902

  • Correspondence - December 6, 1902

  • Recently Patented Inventions - December 6, 1902

  • Notes and Queries - December 6, 1902

  • Index of Inventions - December 6, 1902

  • Patents - December 6, 1902

  • New Books, Etc. - December 6, 1902

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