The War Significance of Cotton, The Navy's Most Pressing Need and more
[Cotton was used to make nitrocellulose--the smokeless "gunpowder" for cartridges and shells]
Features
At the Panama-California Exposition at San Diego
Beautiful Architectural Effects. That Harmonize With Their Picturesque Settings
Aerial Loops at Night, The Current Supplement and more
The Strategic Moves of the War
Our Military Expert--June 30th, 1915
Our First Naval Dirigible
An American-Built Airship Possessing Novel Features of Control and of Anchorage
The New French Battleship "Tourville"
The First Dreadnought to Carry Sixteen Guns in the Main Battery
[note: the ship was planned but never built]
Railroads Under and Over the Streets of New York--I
Difficulty of Excavating Subways Through the Heart of a Big City
Systematic Observation of Meteors
An Opportunity for the Amateur Astronomer
Stealing Bases in Baseball as a Psychologist Sees It
Departments
- Departments
Correspondence - July 10, 1915
Recently Patented Inventions - July 10, 1915
New Books, Etc. - July 10, 1915
