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A New System of Apprenticeship

Electric Discharges from Animals and Men

American Mechanical Engineers

London Fogs

The Expansion of Steam

By R. H. Thurston

The Butler Colliery Fire

American Industries.--No. 60

The Manufacture of Chemicals.

The Step of Man

Center Turning Attachment for Lathes

Ericsson's Duplex Caloric Pumping Engine

The Golden Eagle

Natural Ponds for the Cultivation of Carp for Private Use

Agricultural Inventions


  • Departments

    New Inventions

  • Business and Personal

  • Index of Inventions

  • Notes and Queries

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November 20, 1880

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