Feature

50,000 Blood Donors Weekly Needed to Supply Quota

“Yes, We Have No Bananas” but Babies Need Not Suffer

In Science Fields

Cotton Socks and Rayons Predicted for Hosiery

Natural Vegetation Used in Highly Successful Camouflage

American Cockroaches Produce Large Families

El Salvador Opens Big Suspension Bridge

Beefsteak Shortage Foretaste of Post-War Meat Hunger

Nature Ramblings: From a Warm Climate

New Machines and Gadgets

Fast-Growing Chinese Elm Shows up Well in Tests

First Glances at New Books