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A New Era of Alloys

Crane for Transferring Cars

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

Agricultural Inventions

Miscellaneous Inventions

Mechanical Inventions

Engineering Inventions


  • Departments


  • Recently Patented Inventions

  • Recent Inventions

  • Business and Personal

  • Index of Inventions

  • Notes and Queries

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November 18, 1882

20% Sitewide for President's Day