Popular Science Monthly, v. 94, n. 1, 1919

Google Books

1919-01

Public domain (Google digitized)

Is Part Of
Title	Alternate label	Class
Training of U. S. airplane gunners
Different types of grenades used during World War I
New propeller designed to increase the speed of ships
Balloons used to test air currents during the training of gunners
Giant ingot of steel used to forge the armor-plate of warships
Chicago's memorial arch to her dead heroes
Bombing of cities during World War I
Indian illiterate soldiers signed their pay-rolls with their thumbprints
British troops saved pottery from destruction during the conflict
Taking photographs of enemy lines
Toy submarines and toy guns for Christmas gifts
The developments in airplane technology during World War I
The work of the soldiers involved in the recovery and reuse of war materials and vehicles
New one-man tank designed in the U. S. A.
A shield of steel protects French soldiers while they cut enemy's wire entanglements
Smashed tank transformed into a hut by British soldiers
How U. S. soldiers' uniforms where washed when they were on the front
Shelters used on the front line to protect maps
Smoke used in Paris as a defense against enemy's air raids
An important telephone pole, that was going to fall after a snow storm, was saved on the western front
Ingenious invention created by a British aircraft gunner
The material damages and the loss of human lives caused by World War I
The pigeons' flying corps
The equipment and clothes needed by U. S. soldiers to fight in Russia during winter
The importance of nitrogen in war and in peace