Feature

Books of the Week

African Ticks Tricky Entomologists Discover

Syphilis Increases in U. S.

Remnant of Supernova Cause of Galactic “Spur”

New Ideas and Gadgets

Nature Ramblings: Trees after Christmas

Volume Information

Front Matter

Uranium Optical Maser

Meets Space Challenge

Arthritis Clue in Blood

Designs Suction Tube