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The Wreck of the Louise H. Randall


A Pneumatic Ventilator

Work on the Sewers of Paris

An Improved Nut Lock

A Digging Machine to Deepen Channels, Etc.

An Improved Recording Thermometer

A Combined Rubber Stamp Vulcanizer and Press

Railroad Construction in Old and Modern Times

The Mont Blanc Observatory

Electric Propulsion of Canal Boats

The Manufacture of Desiccated Cocoanut

Improved Steam Steering Gear

To Inventors


  • Departments


  • New Books and Publications

  • Business and Personal

  • Notes and Queries

  • Recently Patented Inventions

  • Index of Inventions

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