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The New University Buildings at Strassburg

The New Building of the Technical High School of Berlin

The Wave Theory of Light

By William Thomson

The Limitations of Submarine Telegraphy

William' System of Coast Defense by Electrical Torpedoes

New Electric Gas Lighter

Electric Light in Theaters

Insulators for Telegraph and Telephone Lines

Brearey's Aeronautical Machine

The New Dam at Suresnes

Improved Doubling and Laying Machine

Improved Wire Testing Machine

Raising of the Fallen Girder of the Douarnenez Viaduct

Improved Ladle Carriage

The Repair of Boiler Tubes

Boiler Tubes

On Various Toning Baths

By W. M. Ashman

Grulet's Screw for Raising Water

Coating Plates with Gelatine Emulsion

Detemiination of Tannin

By E. Johanson

The Incomplete Combustion of Gases

[Abstract of a paper read before the Chemistry Section of the British Association at Montreal.]

By Harold B. Dixon

Apparatus for Saturating Water with Sulphurous Acid

Iodo-Chloride of Silver Emulsion

By V. Schumann

Dr. Koch's Berlin Lecture on Cholera and the Comma Bacillus

Herbst's Method of Filling

By G. C. Cludius

Local Anæsthesia by the Hydrochlorate of Cocaine

By R. J. Levis

New York City Street Cars

On Sewage Disposal

By Henry Robinson

Rings of Smoke

The Botanical Club of the American Association

An Improved Hyacinth Glass

Aluminum and its Alloys

Petroleum Wells

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    Patents - December 13, 1884

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December 13, 1884

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