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SA Supplements Vol 62 Issue 1606supp

SA Supplements

Volume 62, Issue 1606supp

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Features

Science Notes

The Tortosa Astronomical Observatory

The Construction of the Heavens

Hector Macpherson

New Low Temperature Phenomena

James Dewar

Tinning.—IV

Tinning of Copper and Brass

Output of Electric Generators

Greek Jewelry

Grenades and Grenadiers

The Propagation of Butterflies and Moths under Artificial Temperature Conditions

M. Standfuss

The Decker Primary Battery

Francis B. Crocker

Electric Railway Developments

The Bagdad Railway

Electrical Notes

Engineering Notes

Trade Notes and Formulæ