SA Supplements Vol 50 Issue 1281supp

SA Supplements

Volume 50, Issue 1281supp

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Features

California Hydraulic Mining under the Caminetti Act

Farming by Machinery

Running a Blast Furnace

A Remarkable Railway Crossing

The Thickness of Macadam Material

Gelatin as Applied to the Manufacture of Artificial Silk

Charles E. Miller

Machines for Raising Water

Jute Statistics

Trade Suggestions from United States Consuls

Trade Notes and Receipts

Selected Formulæ

Electrical Ignition for Gas and Gasoline Engines

P. P. Nungesser

The Foreign Power Section of the Paris Exposition

The Bamboo Bear of Tibet

The means of Defense of Animals.—V

Russian Central Asia: Countries and Peoples

Countries And Peoples

Archibald R. Colquhoun

Archæology of Lytton, British Columbia

Harlan I. Smith

Patents!

Polar Lights

Departments

American Engineering Competition