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Important Change of Panama Canal Locks

Warship Construction at our Navy Yards

Prevention of "Flarebacks" in Modern Guns

Our Decadent Merchant Marine

A New Coin Counter

The Economic Waste of Accidents

The Current Supplement

Official Meteorological Summary, New York, N. Y., December, 1907

Habits of the Tarantula

By C. E. Hutchinson

Winter Fires

By Day Allen Willey

An Apparatus for Indicating Fire Damp in Coal Mines

A Railroad in Miniature--A Toy Line which Cost $50,000

By W. G. Fitz-Gerald

The Most Wonderful Railroad of the North

By Katherine Louise Smith

Tissot's Respiratory Apparatus

By Jacques Boyer

Great Storms on the Sun

By S. A. Mitchell


  • Departments

    Correspondence - January 11, 1908

  • Index of Inventions - January 11, 1908

  • Recently Patented Inventions - January 11, 1908

  • New Books, Etc. - January 11, 1908

  • Notes and Queries - January 11, 1908

  • Patents - January 11, 1908

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January 11, 1908

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