CONTENTS
1 Pirate Missile
2 Undersea Survey
3 Invisible Sub
4 Aerial Attack.
5 A Hunch Pays Off
6 The Caisson Clue
7 Porpoise Tag
8 Date Trouble
9 A Magnetic Kidnaping
10 Telephone Code
11 Square-Dance Hoax
12 Detection Test
13 Enemy Frogmen
14 A Propaganda Blitz
15 Mountain Hike
16 The Gunman’s Surprise
17 A Missing Amulet
18 Smiley the Sea Cow
19 Flash from the Depths
20 A Lucky Blast
CHAPTER I
PIRATE MISSILE
Tense, excited men gazed spaceward from the ships and planes of the South Atlantic task force. Other watchers waited breathlessly in the control room of the ship Recoverer. Among these was Tom Swift Jr.
“How close to earth is our Jupiter probe missile?” Bud Barclay asked Tom excitedly.
The lanky blond youth beside him, in T shirt and slacks, shot a glance at the dials of the tracking equipment. “Eight thousand miles from this spot, Bud. It should land here in fifteen minutes!”
Tom Jr., his father, Bud, and a host of scientists, Navy officers, and newsmen were crowded aboard a U. S. Navy missile launching ship.
“Just think!” Bud exulted. “You’ll have data from the planet Jupiter that no one on earth has yet been able to get!”
“// we recover the missile safely,” Mr. Swift 11
12 THE ELECTRONIC HYDROLUNG
spoke up hopefully. The elder scientist’s voice was quiet but taut with the strain of waiting. The two Swifts resembled each other closely-each had deep-set blue eyes and clean-cut features-although Tom was somewhat taller and rangier.
“You’re right, Dad,” Tom agreed. “If we don’t snare the missile, our whole project will be a total loss to America’s space program!”
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