The Construction of the Heavens
A Survey of Progress of Sidereal Astronomy
Features
Reinforced Aluminium Electric Cables
Osseine from Bones
The Destruction of Historic Edifices in Europe
And Efforts Made for their Protection
How Much Sulphur in Steel?
Oil-Burning Stand-by Plants
I'Sano Oil
Searchlights in War
How they are Used on Land and Sea
Our Merchant Marine—I
What It Has Been, What It Is and What It Ought to Be
Sharpening Files by a Sand Blast
Simple Process for Purifying Mercury
The U. S. Naval Engineering Experiment Station
A Valuable But Little Known Enterprise at Annapolis, Md
The Improvement of the High-Boiling Petroleum Oils—II
The Action of Aluminum Chloride Concluded from Scientific American Supplement No. 2090 Page 51, January 15, 1916
When the Railroad Lost Business
Anti-chlor. Respirators
By-Products of Gas Manufacture
Hydrocyanic Acid and its a pplications
An Ingenious Electric Drive Gear
Adapted for Light Railway Work
Autobus in Spain
Patient or “Case” ?
Zeppelin Airships
An Address, Historical and Descriptive, by Their Designer
Oil-Mixed Portland Cement Concrete—I
Notes on the Preparation and Use of a Valuable Building Material