Feature

Sun Is Just a Youngster Two Billion Years Old

Gland Removal Aids Muscle Weakness Disease

Nature Ramblings: Plant Defenses

Synthetic Sex Hormone Now Safe for General Use

New Machines and Gadgets

50,000,000 Watts of Power for New York City Area

First Glances at New Books

Front Matter

Save Patients with Malignant Type of High Blood Pressure

[Photograph]: Hydromatic

Illinois Rivals Egypt in Pyramids and Ruins

Deaf Smith County, Texas, Points Way to Sound Teeth