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Features

The Gilbert Elevated Railway

A Three Sided Question

The Liquefaction of Air and all the Permanent Gases

Notes of Patent Law Decisions

Mysterious Explosions

Corrugated Boiler Flues

Astronomical Notes

By Berlin H. Wright

Quick-Speed Drill

New York Academy of Sciences

Paper and Wire Testers

Fawcett's Improved Ladle

Carnes' Improved Basin Stopper

Metallic Arches for Tunnels

The New Baxter Portable Engine

The Liquefaction of Oxygen

By M. Raoul Pictet

Machine for Preparing Ramie Fiber

New Apparatus for the Compression of Hydrogen and Oxygen

How Submarine Cables are Destroyed

Wants and Business Inquiries

Communications Received

Departments

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    New Books and Publications

  • Business and Personal

  • Notes and Queries

  • Index of Inventions

  • Patents

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February 02, 1878

Help Us Reforest the Mississippi River Valley