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Is a Revision of Gatun Dam Necessary?

Battleship “Georgia” Disaster

Latest Results with Marine Turbines

Opening of the New Haven Railroad Electric Service

Building Railway Coaches with Side Doors

The Heating of Copper Wires by Electric Currents

The First Races and Records on the New Weybridge Track

By the London Correspondent of the Scientific American

Block Signals in the Cab of the Locomotive

Death of Sir William Perkin

Photomicrographs without a Microscope

By C. H. Claudy

Orthopedic Appliances

By Jacques Boyer

Some Strange Sources of Water Power on the Coast of Dalmatia

By Arthur L. Williston

An Improvement in Hammers

Answer to the Plug Puzzle

Building Block for Concrete Construction

Attachment for Sewing Machines

Patent Department


  • Departments

    The Heavens in August

  • Correspondence - July 27, 1907

  • Recently Patented Inventions - July 27, 1907

  • Index of Inventions - July 27, 1907

  • Patents - July 27, 1907

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July 27, 1907