Stories by Frederic Campbell

Binocular Vision

Some Remarks on the Mechanics and Psychology of Seeing

Using the American Ephemeris to Make Your Own Almanac

Air Pressure in the Subway

Two Giant Worlds, The Ninth International Congress of Applied Chemistry, and more

First Magnitude Stars

Curiosities of Binocular Vision

Stereoscopic and other Effects

Stereoscopic Vision

The Crossed and Direct Method of Viewing Objects