Mind & BrainOctober 7, 1916
Binocular Vision
Some Remarks on the Mechanics and Psychology of Seeing
Stories by Frederic Campbell
The SciencesMarch 18, 1916
Using the American Ephemeris to Make Your Own Almanac
The SciencesAugust 1, 1914
Air Pressure in the Subway
The SciencesJuly 11, 1914
Two Giant Worlds, The Ninth International Congress of Applied Chemistry, and more
Space & PhysicsApril 4, 1914
First Magnitude Stars
The SciencesAugust 23, 1913
Curiosities of Binocular Vision
Stereoscopic and other Effects
The SciencesMay 11, 1912
Stereoscopic Vision
The Crossed and Direct Method of Viewing Objects