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SA Supplements Vol 63 Issue 1625supp

SA Supplements

Volume 63, Issue 1625supp

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Features

The Southwest African Railway

Alfred Gradenwitz

Margin for Improvement of the Steam Engine

Making Unusual Castings

Walter J. May

The Mechanical Design of Ball Bearings and Roller Bearings

W. S. Rogers

Gypsum (Plaster of Paris) and its Utilization.—I

A Future for the Ice-Manufacturing Industry

W. E. Parsons

The Ethics of Trade Secrets

Frederick P. Fish

The Motor Torpedo Boat—A New Type

What a Kilowatt-Hour of Electricity will Do

The Flights of Zeppelin's Airship on October 9 and 10, 1906

Hergesell, Von Kehler

Poulsen's Telephonic Message Recorder

Gasoline, Kerosene, or Alcohol for Marine Explosive Engines

A. E. Potter

Electric Sleep or Anæsthesia

G. H. Niewenglowski

The Theory and Action of a 100-Mile Wireless Telegraph Set.—V

A. Frederick Collins

Mortise and Tenon Joints

Eighteen Hundred Year Old Bacteria

Rope Drives—Various Methods of Arranging Ropes on the Sheaves

R. Hoyt

Weight of Man on the Planets

Science Notes

Electrical Notes

Engineering Notes