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Features

The Hat Conformator and its Diagrams

The Genesis of the Telephone

Invention as a Means of Culture

The Treatment of the Insane

The Astounding Famine in China

Hayford's Wood-Preserving Process

A Brief History of Our Patent System

The Liquefaction of the Gases--M. Pictet's Apparatus

Improved Fire Escape

Communications - March 9, 1878

Practical Mechanism

NEW SERIES.

By Joshua Rose

The Ransom Siphon Condenser

Talley's Hydraulic Engine

The Cereus Candicans

Black Cock and Ptarmigan

The “Acme” Double Acting Steam Pump

Submarine Illumination

Astronomical Notes

By Berlin H. Wright

Departments

  • Fish Teeth Set on Hinges

  • Departments

    Business and Personal - March 9, 1878

  • Index of Inventions - March 9, 1878

  • Notes and Queries - March 9, 1878

  • Patents - March 9, 1878

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March 09, 1878

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