Saving the Motorist from Himself

Conditions Which Have Led to Fourteen Percent of the Motor Car Deaths

Matter, Ether and Energy

Can Atoms and Electrons Be Destroyed and Is Matter a Form of Ether?

The Skin Game

In the Great Fur Masquerade, Muskrats, Rabbits and Weasels Pretend They Are Seals, Beavers and Ermines

"Spirit Return"

"I approve of your suggestion to retain the envelope unopened and I continue the offer of $500 to any one who wishes to try further—until November 1, 1925."

Plumbing the Depths of Neptune's Secrets

Fables of the Sargasso Under the Acid Test of Science

Remarkable New Tests Favor the Einstein Theory

How the True Cattalo is Bred

Contact and Refueling Now Accomplished in the Air

A Record of Achievement

Radio at the North Pole

MacMillan Expedition to Test Effect of Aurora Borealis on Short Wavelengths

How Explosive are Explosives?

Special Technicians Test the Sensitiveness, Stability, Power and Rate of Explosion of the Many Kinds of Explosives by Scientific Methods

Chemistry in World Affairs--II

Daylight, Twilight and Mist in the Movies

Another Side of the 5-5-3 Argument

An Article by Captain Dudley W. Knox, U.S.N. (Ret.) Reproduced as It Comes to Us

The Delaware River Bridge

Connecting Philadelphia and Camden by the World's Longest Suspension Bridge

The Centenary of the Railroad

Railroads in 1925 Will Celebrate Their One Hundredth Birthday

Mammals Almost as Small as Insects

Habits and Characteristics of the Tiny Shrew, a Creature Which Is Little Known Because of Its Semi-subterranean Habits

From the Scrap-book of Science--Camera Shots of Scientific Happenings

Fish from Artesian Wells in the Sahara

The Mountains Light a City

Seattle's Ambitious River Power Development

News for Inventors

A Department of Facts and Notes of Interest to Patentees and to Owners of Patent and Trademark Rights

Engine Balance

The Conclusion of Professor Cormac's Discussion of Counterbalance