SA Supplements

November 1881

Volume 12, Issue 307supp

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Features

Large Iron Roofs

The Great Steamer City of Rome

Mechanical Science

Opening Address by Sir W. Armstrong, C.B., D.C.L., LL.D., F.R.S., President of Section G, British Association, York, 1881

The Small-Arm Factory at Enfield

The Army and Navy Building at Washington

Electric Lighting by Incandescence

J. Swan

The Jablochkoff System at the Paris Electrical Exhibition

Magneto-Electric and Dynamo-Electric Machines in the International Electrical Exhibition at Paris

Gas Engines at the Paris Electrical Exhibition

Air Telethermometers

E. Rousseau

History of Telegraphy

A New Method of taking Transparent Positives

Biny

On the Separation of Hydrocarbon Oils from Fat Oils

Alfred H. Allen

The New Element Actinium

Practical Hints on Saving Silver and Gold Wastes

Cooper

Hospital of st. Eloi, at Montpellier, France

Frederic J. Mouat

Saliva and Snake Poison

The Late Discovery of Egyptian Remains

The Recent Discoveries in Egypt

Influence of Forests on Water Courses

David D. Thompson