Feature

New Machines and Gadgets

“Vegetable Ivory” May Be New Stuff for Buttons

First Glances at New Books

Front Matter

New Detector Locates Metal Fragments in War Wounds

Officer Invents Furnace for Gas Mask Charcoal

[Photograph]: To Chase Submarines

[Photograph]: War Fashion

Super-Power Test Laboratory Guards Our Electric Plants

Scientists Still Uncertain Whether Vitamins Darken Hair

25,000 Tons of Wild Rubber Await Harvest in Wastelands

New Method of Using Sulfa Drug Cures Peritonitis