SA Supplements Vol 76 Issue 1957supp

SA Supplements

Volume 76, Issue 1957supp

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Features

The Origin of Worlds—I

The Evolution of Solar Systems Illustrated by Laboratory Experiments

Kristian Birkeland

The Life Hazard in Crowded Buildings Due to Inadequate Exits

Faults Exposed and Remedies Suggested

H. F. J. Porter

The Earth's Continental Pole

A Rubens' Picture Identified by Photography

A French Diesel Engine

The Spectroscope in Organic Chemistry

J. J. Dobbie

Pneumatic Tires

The Most Vital Part of the Automobile

P. W. Litchfield

The Human Machine—How it Works

The Living Body Not Exempt from the Rule of Physical Law

The Large Cetacea are Disappearing

The Falling of Leaves and Rain

The Undulator

A Modified Reciprocator for Ornamental Lathes

A. S. Rogers

Distribution of Sugar in the Beet Root

Mathematics for Recreation

F. B. Selkin