Table of Contents

Letters

Books

Palomar Gets a New Telescope

Microquakes—A Tool for Understanding Destructive Earthquakes?
Very small shocks may help determine the strain rate along a fault

Pulsating Stars
A Caltech physicist reveals results of a four-year computer study
by Graham Betty

Flower Initiation
Experiments show there is more than one gene group in a plant that can make it bloom

The Month at Caltech

Personals