Feature

Blood Vessel Trouble May Warn of Lung Cancer

Medicine to Double in Next Ten Years

Change Reportable Ills

Aluminum Bulb Bases Save Critical Copper

Recover Manganese Ore

Planetarium Built in USA to Be Installed in Uruguay

How to Tell the Crank

Four Ways to Ward off Toothaches

Books of the Week

New Cooling System Adds Efficiency to Generators

Ocean-Sounding Device Accurate in Deepest Water

Need All-Pervading Ether