Feature

Scientist Traces Evolution of Firefly Light Reaction

Recent Volcanic Eruptions May Affect World Weather

In Science Fields

Most Effective Insect Killer Yields Formula to Chemists

Front Matter

German Scientist Confirms Existence of Neutrons

New Copper Isotope Revealed by Magneto-Optic Method

Lost in Space: Our Sun’s Twin

Booklists of the A. A. A. S.

Drug Made from Indian Plant Produces Movie-like Visions

[Photograph]: Saving Young Eyes

Nature Rambling: A Miner for Worms