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SA Supplements Vol 47 Issue 1223supp

SA Supplements

Volume 47, Issue 1223supp

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Features

Relation of External Agents in Plant Reproduction

Scenes in Matanzas

Earthworms

M. C. Holmes

Automobiles in Paris

The Wehnelt Interrupter for Induction Coils

American Machines in England

Thirty-Three-Ton Block-Loading Titan Crane

Trade Suggestions from United States Consuls

German Imitations of American Machine Tools

Electrical Notes

Miscellaneous Notes

Selected Formulæ

“A Thousand Days in the Arctic.”

Practice in Storming Breastworks by German Engineer Corps

What a Weather Observer should Know

N. R. Taylor

The Commercial Development of Germany

C. Rozenraad

Store Window Washing

The Progress of Submarine Navigation

The Cosmoscope

On the Therapeutic uses of Sea Travel

Rapid Blueprinting Processes

Albert E. Guy

The “House in the Woods” at the Hague

Enameling as an Industry

Josef Vollkommer

Patents!