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An Important Innovation in Telegraphy

Risk of Derailment on Elevated Railroad Curves

Loss of the Flagship "Mikasa"

The Bicycle and the Automobile

Producing High Vacua

The Effect of Hydrogen on Gas Engine Compression

By George M. S. Tait

The Phonocard

The Current Supplement

The Elevated Railroad Wreck in New York

Electrical Control of Bulkhead Doors on Warships

Our Naval Guns in the Civil War and To-Day

The First Producer-Gas Boat

A Government-Built Battleship

Hydraulic Suction Dredge on the Mississippi

By Day Allen Willey

The New Solar Observatory at Mount Wilson

By M. Benedict Maye

Ancient Reservoirs at Carthage

An Interesting Shark

By Charles Frederick Holder

A Novel Carriage-Washing Apparatus

New Warp-Beam Tension Devices for Looms

Patent Department

New Rotary Valve for Steam Engines

A Striking Illusion Apparatus

Sand Wheel Toy

A New Wind Instrument

Business and Personal Wants


  • Departments

    Correspondence - September 23, 1905

  • Recently Patented Inventions - September 23, 1905

  • Notes and Queries - September 23, 1905

  • Index of Inventions - September 23, 1905

  • New Books, Etc. - September 23, 1905

  • Patents - September 23, 1905

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