ALAN E. NOURSE
Reading edition

DAVID McKAY COMPANY, Inc. NEW YORK
Copyright © 1959, 1960 by Alan E. Nourse
All rights reserved
LIBRARY OF CONGRESS CATALOG CARD NO. 60-7199
Manufactured in the United States of America VAN REES PRESS · NEW YORK
Typography by Charles M. Todd
Sixth Printing, April 1973
Part of this book was published in Amazing Science Fiction Stories
Transcriber's note: Extensive research did not uncover any evidence that the copyright on this publication was renewed.