Feature

School for Dogs

Make Pituitary Hormone

Front Matter

New Operation, Pills for Ulcer Patients

New Machines and Gadgets

Underwater Murkiness Removed by Filtering

Transistor Hearing Aids Operate at Lower Cost

Sewage-Grown Algae

Stereophonic Sound

Find Survival Limit for Lung to Be Grafted

First Half Hour Critical Period in Heart Wound

Dentists Now Using 3-D