Feature

World’s Largest Propeller Is Put through Its Paces

[Photograph]: Handy

New Machines and Gadgets

[Photograph]: Lightning Did This

Electron Microscope Shows Germ Killers at Work

Front Matter

Aleutian Weather Is as Bad as Navy Men Say It Is

Mountains of Cabbage Dried for Lend-Lease Shipping

Sulfa Drug Control of Colds Hinted in Report of Tests

Dehydrated Beef Now in Production for Lend-Lease

Electron Microscope Pictures May Be Sent by Television

Muscle of Ear Acts to Protect against Noise