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SA Supplements Vol 54 Issue 1383supp

SA Supplements

Volume 54, Issue 1383supp

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Features

The Braun-Siemens-Halske System of Wireless Telegraphy

How to make a Dry-Cell Battery

Some Novel Electrochemical Industries

Mescal: A Study of a Divine Plant

a Study of a Divine Plant

Havelock Ellis

Volcanoes

Adam's Peak in Ceylon

The Cretan Excavations

The Laws of Nature

S. P. Langley

The German Archæological Expedition at Babylon—Some Remarkable Discoveries

Sleep Producers

J. H. Kellogg

Acetylene Solvents

Trade Suggestions from United States Consuls

Selected Formulæ

Patents!