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Features

Crane for Transferring Cars

A New Era of Alloys

The Transit of Venus

Recent Progress in Oyster Farming

By H. C. Hovey

New Stop-Valve for Locomotive Steam Pipes

Machine for Making Spikes

Siemens' Unipolar Machine

Garden Destroyers.—Gall Flies of the Oak—"Cynipidæ."

Theater Fires.--Fireproof Fittings Demanded

Mechanical Inventions

Miscellaneous Inventions

Engineering Inventions

Agricultural Inventions

Departments

  • Departments

    Correspondence

  • Recently Patented Inventions

  • Recent Inventions

  • Business and Personal

  • Notes and Queries

  • Index of Inventions

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