Feature

Interesting Delporte Object Keeps Astronomers Guessing

Steel-like Glass Permits Centrifuge Observations

Spiral Nebula in Andromeda Bordered with Star Clusters

Nature Ramblings: Spring Beauty

Submarines May Carry Tomato Plants to Detect Gas Leaks

First Glances at New Books

Front Matter

Most Effective Insect Killer Yields Formula to Chemists

Men Attacked by New Brain Disease of Horses

[Photograph]: Saving Young Eyes

Recent Volcanic Eruptions May Affect World Weather

Restriction Urged on Use of Poisonous Thallium