Skip to main content
SA Supplements Vol 81 Issue 2105supp

SA Supplements

Volume 81, Issue 2105supp

You are currently logged out. Please sign in to download the issue PDF.

Features

Radiation from Atoms and Electrons—I

A Study of the Character of the Mechanism Within the Atom

J. J. Thomson

Improving Negatives for Printing

The Extension of Human Life

Irving L. Fisher

Reducing our Waste in Eggs

What the Demonstration Car of the Department of Agriculture is Doing

M. E. Pennington, H. C. Pierce, H. L. Shrader

Extinction of Species

Gas-filled Tungsten Glow Lamps

Aeroplane Struts

The Bagdad Railway and the European War

Progress Made Up to the Outbreak of the War and Present Lack of Materials

Lewis R. Freeman

Sunlight a Necessity for the Maintenance of Health

J. W. Kime

A Novel Evaporator

Teaching Scientific Forestry

Valuable Work Done By a State Institution

Hugh S. Baker

Museums as Aids to Forestry

Harlan I. Smith

Physical and Mechanical Factors in Corrosion

How the Mechanical Heterogeneity of Metals Affects the Process

Cecil H. Desch

Signaling at Sea

The Transport of Material in the Form of Dust

T. C. Cloud

Great Electro-Magnets—I

Wonderful Instruments Proposed for the University of Paris

Aluminium Dust

An Unexpected Water Supply

Effects of Electrolysis on underground Piping Systems

Various Dangers and Methods of OvercOming Them

Albert F. Ganz

The Food Supply of the German People

A Mechanism of Protection against Bacterial Infection

Carroll G. Bull

An 18-Inch Gun