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SA Supplements Vol 23 Issue 575supp

SA Supplements

January 1887

Volume 23, Issue 575supp

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Features

Friction

The Methods of Reducing the Resistance of Friction.

H. S. Hele-Shaw

Experiments on Flight

Some Type Writers—Their Origin and Uses

J. B. Huling

Blast Furnace Practice

Indigo Manufacture: An Improved Process

Suggestion about Canceling Postage Stamps

An Iron Microphone

The Blackpool Electric Tramway

The Harcourt Color Tests

H. Leicester Greville

The Pressure and Composition of Natural Gas

H. M. Chance

On the Determination of Aluminum in Presence of Large Proportions of Iron

Robert T. Thomson

Crystallization of Native Copper

Causes of Forest Rotation

John T. Campbell

Haunts and Habits of the Great Lake Salmon

G. Archie Stockwell

Departments

Patents - January 8, 1887