Feature

Front Matter

Successful Gland Grafts

[Photograph]: Photo Reconnaissance Plane

Machines Will Make Clerks Obsolete

Discounting Opponent’s Claims May Help Him

Escape Tornado Injury

Plastic Eyecaps Test Color Theories

Origin of Solar System

Alcohol from Wood Waste

[Photograph]: Fewer Sick Lambs

Detection of Cancer

Find Raindrop Size on Mt.