Methods of Invisible Writing Employed during the War, and their Detection
The Claude Process, Now in Successful Operation in France
The Huge Sirens That Warn the Population to Take Shelter
[air raids on Paris]
[the cover color illustration is associated with this article]
Some of the Things Which the Eyes of the Camera Sees When it Looks Through the Hen's Creations
The Latest Scientific Wrinkles as Applied by French Doctors to Investigating This Sore Subject
Bringing the Nerves of the Battle Line into the Laboratory
By Jaques Boyer
"building up of a series of tests, partly mental and partly physical, by means of which a candidate for aviation or ambulance driving or some other special work is made to reveal his ability to do that work,"
The Manufacture of Catgut for Hospital Use in France.
Ingenious Devices which Enable the Maimed to Resume their Places in the Industries
Hands and Limbs that Enable Expert Operations to be Performed
Psycho-Motive Examination of Candidates for the French Service
Trench journals from French soldier-journalists.
Its Manufacture and Industrial Applications