Feature

NP Dischargees Think Service Affected Health

New Machines and Gadgets

Front Matter

Answer to Muscle Riddle

Army Helicopter to Hover over Mexican Volcano

Neostigmine for Polio

Trench Mouth Remedy

Good for 100,000 Miles

“Hidden” Stars Studied

Fantastic Nazi Claim

Plasma for Civilians

Giant Clipper Capable of Five Miles a Minute