SA Supplements

February 1900

Volume 49, Issue 1260supp

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Features

Berlin's Plant for the Burning of Garbage

Hypnotism in Practice

Are Further Experiments needed for determining the Atomic Weight of Oxygen?

Edward W. Morley

Gasoline Motors for Automobiles

George Kellogg Barrett

Strength of Steel Balls

Variable Speed Gear

A Big Shaft Lathe

Lord Rayleigh on Flight

Electro-Magnetic Separator

An American Pacific Cable

George Owen Squier

Solignacts Electric Fore-Carriage

Hydraulic Cements

William S. Macharg

The Metric System

Schweitzer System of Bread making in Paris

Ice upon the Coast of the Black Sea

The Electrical Potential of the Atmosphere, Referred to other Conditions

Edwin G. Dexter

Trade Notes and Receipts

Selected Formulæ

Power from Trenton Falls

L. P. gratacap

Trade Suggestions from United States Consuls

The Man's Knife among the North American Indians—A Study in the Collections of the United States National Museums

Otis Tvfton Mason Curator