Produced by Greg Weeks, Graeme Mackreth and the Online Distributed Proofreading Team at http://www.pgdp.net [Illustration] TOM SWIFT AND THE ELECTRONIC HYDROLUNG [Illustration: _The grenade went streaking straight toward Tom!_] THE NEW TOM SWIFT JR. ADVENTURES TOM SWIFT AND THE ELECTRONIC HYDROLUNG BY VICTOR APPLETON II ILLUSTRATED BY CHARLES BREY NEW YORK GROSSET & DUNLAP PUBLISHERS Copyright BY GROSSET & DUNLAP, INC., 1961 [Transcriber's note: Extensive research did not uncover any evidence that the copyright on this publication was renewed.] ALL RIGHTS RESERVED PRINTED IN THE UNITED STATES OF AMERICA CONTENTS CHAPTER PAGE 1 PIRATE MISSILE 11 2 UNDERSEA SURVEY 20 3 INVISIBLE SUB 31 4 AERIAL ATTACK 39 5 A HUNCH PAYS OFF 50 6 THE CAISSON CLUE 56 7 PORPOISE TAG 64 8 DATE TROUBLE 72 9 A MAGNETIC KIDNAPING 81 10 TELEPHONE CODE 90 11 SQUARE-DANCE HOAX 100 12 DETECTION TEST 109 13 ENEMY FROGMEN 119 14 A PROPAGANDA BLITZ 130 15 MOUNTAIN HIKE 140 16 THE GUNMAN'S SURPRISE 148 17 A MISSING AMULET 156 18 SMILEY THE SEA COW 166 19 FLASH FROM THE DEPTHS 176 20 A LUCKY BLAST 183 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!" "_If_ we recover the missile safely," Mr. Swift 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!"