ASTRONOMY

LITARY

DOVER BOOKS EXPLAINING

SCIENCE

FLATLAND, Edwin A. Abbott. (20001-9) $1.50

THE EVOLUTION OF SCIENTIFIC THOUGHT FROM NEWTON TO EINSTEIN, A.
d'Abro. (20002-7) $6.00

THE RISE OF The New Physics, A. d'Abro. (20003-5, 20004-3) Two-volume
set $10.00

ELEMENTARY CONCEPTS OF TOPOLOGY, Paul Alexandroff. (60747-X) $1.75
STAR NAMES: THEIR LORE AND MEANING, Richard H. Allen. (21079-0) $5.50
THE RESTLESS UNIVERSE, Max Born. (20412-X) $4.50

SOAP BUBBLES, C.V. Boys. (20542-8) $3.00

THE WORLD OF SOUND, Sir William Bragg. (21853-8) $2.00
CLIMATE THROUGH THE AGES, C.E.P. Brooks. (22245-4) $3.50
INSECTS, FOOD, AND ECOLOGY, Charles T. Brues. (21070-7) $5.00
WHAT IS SCIENCE?, Norman Robert Campbell. (60043-2) $3.00
EUCLID AND HIS MODERN RIVALS, Lewis Carroll. (22968-8) $3.50
THE CURVES OF LIFE, Theodore Andrea Cook. (23701-X) $5.95
THE DISCOVERY OF NEPTUNE, Morton Grosser. (23726-5) $3.00
THE FRIENDLY STARS, Martha Evans Martin and Donald H. Menzel.
(21099-5) $2.50

PLANETS, STARS AND Galaxies, A.E. Fanning. (21680-2) $3.00

LISTENING IN THE DARK: THE ACOUSTIC ORIENTATION OF BATS AND MEN, Don

ald R. Griffin. (21714-0) $4.00

ADVENTURES WIth a Hand Lens, Richard Headstrom. (23330-8) $2.75
ADVENTURES WITH A MICROSCOPE, Richard Headstrom. (23471-1) $3.00
THE STRANGE STORY OF THE QUANTUM, Banesh Hoffmann. (20518-5) $3.00
CRUCIBLES: THE STORY OF CHEMISTRY, Bernard Jaffe. (23342-1) $5.00
PRACTICAL STATISTICS Simply Explained, Russell Langley. (22729-4) $4.50
Animals ParasitIC IN MAN, Geoffrey Lapage. (21047-2) $4.00

BIOLOGICAL RHYTHMS IN HUMAN AND ANIMAL PHYSIOLOGY, Gay Gaer Luce.

(22586-0) $4.00

THE CONCEPT OF ENERGY SIMPly Explained, Morton Mott-Smith.
(21071-5) $2.75

THE CONCEPT Of Heat and Its Workings, Morton Mott-Smith. (20978-4)
$2.75

MUSIC OF THE Spheres: The Material Universe from Atom to Quasar, Sim-
PLY EXPLAINED, Guy Murchie. (21809-0, 21810-4) Two-volume set
$10.00

THE SEARCH FOR EXTRATERRESTIAL INTELLIGENCE, NASA. (23890-3) $3.00
NOTES ON NURSING, Florence Nightingale. (22340-X) $2.50
THE GENTLE ART OF MATHEMATICS, Dan Pedoe. (22949-1) $2.50
PLAYING WITH INFINITY, Rózsa Péter. (23265-4) $3.50

GEOMETRIC EXErcises in Paper FOLDING, T. Sundara Row. (21594-6) $2.25
GEOMETRY, RELATIVITY AND THE FOURTH DIMENSION, Rudolf Rucker.

(23400-2) $2.75

(continued on inside back cover)

THE
SEARCH FOR
EXTRATERRESTRIAL
INTELLIGENCE

Prepared by
National Aeronautics

and Space Administration

Edited by

Philip Morrison,
John Billingham

and

John Wolfe

DOVER PUBLICATIONS, INC.
NEW YORK