SA Supplements Vol 70 Issue 1806supp

SA Supplements

Volume 70, Issue 1806supp

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Features

Nature of the Earth's Interior

Its Relation to the Question of Deep Mining

E. H. L. Schwarz

Apparatus to Illustrate Earth-Induction, and the Principle of the Simple Dynamo and Motor

Henry S. Curtis

How to make a Shocking Coil

Simple Instructions for Amateurs

Some Brilliant Examples of inefficiency

Harrington Emerson

Steam Turbines.—I

Their Development during the Last Twenty-Five Years

Gerald Stoney

Influence of Thunder upon Raindrops

The Rio Grande Irrigation Project

The Largest Reservoir in the World

Air Nitrate Fertilizers

New Monorail Cars

Recent Progress in Aviation.—IV

Chronology of Aviation. †

O. Chanute

Chinese Red Tuberoses

Live and Dead Weight

Antiquities in Magna Græcia

Traced Forgeries

Identity of Signatures as Proof of forgery

Albert S. Osborn

Improved Open Feed-Water Heater

An Early Electric Fire Pump

Light and Electromagnetism

Electric Waves and the Electromagnetic Theory of Light

Amateurs and Astronomical Discovery

How Amateurs can Help Astronomers

W. F. Denning

Trade Notes and Formulæ

Engineering Notes

Science Notes