Feature

High-Frequency Current Used for Dehydration

Front Matter

Chemical Prevents Mud

Yeast Cells May Be Used to Manufacture Biotin

Army Limits Use in U. S. of 80-Octane Gasoline

Mosquitoes Suspected

[Photograph]: Tubulated

Plywood Chamber Devised for Fumigating Clothes

Pencillin Checks Growth of Plant Disease Germs

Featherless Pigeons

Birth of Quints Rare

Harvesting Vitamins