Feature

New Machines and Gadgets

Front Matter

Vaccine against Leprosy

New Vitamins Predicted

Automatic Controls Work on Helicopters

Profile System Urged

Test for ACTH Dosage

Polio Risk Increased after Tonsil Removal

[Photograph]: Giant “Gems”

Doubtful That Fatness Leads to Heart Disease

Oak Wilt Preventive

Tighter Controls Sought