The SciencesMay 31, 1919
A Question of Identity
Were Flying Reptiles Merely Unfeathered Birds, or Birds Merely Feathered Reptiles?
Stories by W. H. Ballou
The SciencesMarch 29, 1919
Return of the 17-Year Locust
What He is and How to Combat his Ravages
The SciencesMarch 22, 1919
The Vampire Bat
A South American Species That Lives Entirely on the Blood of Other Animal
HealthMarch 15, 1919
Ticks as Carriers of Animal Disease
Inferences Drawn from the Destruction of 500 Reptiles at the New York Zoological Garden During Several Years
The SciencesFebruary 8, 1919
The Instability of American Airplanes
Sources of the Defects That Have Killed Many Pilots Revealed by Experiments that Reduce Aerodynamics to the Elementals
The SciencesAugust 31, 1912
The Celilo Canal
The SciencesJune 1, 1912
The New Los Anǵeles Water Works
A World's Object Lesson