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Features

Leveling Attachment for Earth Cars

New Recording Galvanometer

By M. Hopkins

The Telephone on the Battlefield

What We Buy and Sell Abroad

Blight of Pear Trees

By T. J. Burrill

Destruction of Oysters by Petroleum

New Hammerless Gun

Toothed-Wheel Wire Fence

Improved Nursery Chair

New Chimney Cap and Ventilator

Agricultural Inventions

The Fan-Tailed Poodle

Mechanical Inventions

Apparatus for Determining the Electric Charges of Falling Rain

Davey's Simplex Motor

Note on Turpentine, Rosin, and Allied Products

The Dowd Tunneling System

History of Elevated Railways

Homicide in the United States

Departments

  • Departments

    New Inventions

  • Business and Personal

  • Index of Inventions

  • Notes and Queries

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October 30, 1880

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