“Earth Liǵht”
Or the Brightness, Exclusive of Star Light, of the Midnight Sky
Volume 73, Issue 1902supp
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Features
The Pressure of a Blow—I
And the Impact of Projectiles on Armor Plate
The Sense of Orientation in the Ant
Refuse Disposal at Furth, Germany
Up-to-date Methods in City Hygiene
Enǵine Foundations
Their Function to Hold the Engine and to absorb Vibrations
Turpentine from Dead and down Timber
Recovering Values from Seemingly Waste Material
Recent Cancer Research—II
And Modern Views Regarding the Nature of the Disease
The Unit of Heat
Electric Reversible Rollinǵ Mills and Auxiliary Equipment
Good Road Buildinǵ
The Scarifier and Roller
The Paths of Space
The Commercial Development of India Rubber
A Historical Review
Sitophobia: A Diǵestive Phantasm
Aberrations of the Appetite
Bioloǵical Effects of Radio-Active Thorium
Our Berlin Correspondent
Electric Heatinǵ in Norway
Makinǵ Ice with Heat
Refrigeration without Power for Home Use
On the Devitrification of Silica Glass
By Heat and by Radium Rays
Reviews of New Books
The United States Patent System—I
Its Good Points and its Faults