The SciencesApril 19, 1919
Sir William Crookes
An Appreciation of a Great Physicist and Chemist
Stories by John W. N. Sullivan
The SciencesMay 1, 1915
The Evolution of the Elements: The Evidence of the Stars
That the Various Chemical Elements Merge Into One Another by a Process of Evolution
TechnologyJune 27, 1914
X-Ray Photographs of Flowers
The SciencesJune 20, 1914
X-Ray Analysis of Crystals, A Close Shave in the Air, and more
The SciencesJune 13, 1914
The Life Story of an Atom
The SciencesJune 6, 1914
New Work in Spectrum Analysis, The Disappearance of Gustav Hamel, and more
The SciencesApril 4, 1914
Gravitation and the End of the World
The SciencesFebruary 21, 1914
An Organ on Which Color Compositions Are Played
The New Art of Color Music and Its Mechanism
Space & PhysicsDecember 20, 1913
How many Stars are there in the Milky Way?
A Great Astronomical Problem and how it is Attacked
The SciencesDecember 20, 1913
The Value of Science
EvolutionFebruary 15, 1913
The Evolution of Worlds
The Work of Sir George Howard Darwin
The SciencesMarch 30, 1912
The New Notions of Matter