Feature

The Gastric Juice: “A Classic of Science”

In Science Fields

New Moving Pictures in Colors Use Tiny Colored Squares

Magnetism Reveals Differences in Steel

Used Oil Proves Superior in Auto Operation Tests

X-Rays Are Most Destructive to Young, Growing Cells

Science’s Growth Indicated by Increase in Literature

[Photograph]: Collectors of Atmospheric Electricity

Front Matter

In Science Fields

16,000,000 Volts from Skies to Produce Super X-Rays

Telescope with New Features Will Take Best Star Pictures