Feature

Atomic Bullets Aimed at Secrets of Matter

[Photograph]: Twice Pioneer

Adrenal Cortex May Give Resistance to Poliomyelitis

Front Matter

[Photograph]: No Elongation Here

Frog Tadpole Tails Successfully Transplanted

Accuracy of History Checked by Study of Famous Bones

First Glances at New Books

In Science Fields

Heated Gypsum Becomes Useful, Thirsty Chemical

Minute Duckweed Infested by Even Smaller Insects

Steadiness Tests May Pick Marksmen before They Shoot