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Completion of the Eiffel Tower

French Torpedo Boat No. 110

The Manufacture of Paraffin Oil

By D. R. Steuart

The Making of Dry Plate Emulsions

An Absolute Standard Sensitometer

Arc Lamps and their Mechanism

By Silvanus P. Thompson

A New Galvanometer for Projection

By J. W. Moore

The Electrical Treatment of Sewage

Action of Santonin on the Nerves of the Eye

Address before the Boston Medical Library Association

By Oliver Wendell Holmes

Joseph Priestley, LL.D., F.R.S., and the Discovery of Vital Air—Oxygen Gas

By Benjamin Ward Richardson

On the Limit of the Solar Spectrum the Blue of the Sky, and the Fluorescence of Ozone

An Automatic Wash Bottle

By J. F. Jones

Producing Aluminum and other Metals and Alloys

A Select Method of Preparing Nitrogen Gas

By H. N. Warren

Useful Engineering Books

Building Plans and Specifications

The Meteoric Theory


  • Departments

    Patents- May 11,1889

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