TOM SWIFT AND HIS
SPECTROMARINE
SELECTOR

by VICTOR APPLETON II

“We're trapped two miles below the ocean's surface!” The dire ex- clamation underscores the deadly course of Tom Swift's most challen- ging undersea venture — a trip to the ancient city of gold on the ocean bottom.
    Perils menace Tom and his friend Bud Barclay even before reaching the sunken ruins of lost Atlantis as they face death in a flooding airlock and the wily plots of the Mayday Mob. In the background shadows lurks a mysterious international assassin of ruthless cunning and genius.
    Beneath the dome of Aurum City Tom uses his spectromarine selec- tor to bring to light golden ruins and a temple hinting at the astoun- ding history of the lost civilization. But there are spies and saboteurs afoot, and as the suspects mount up the young inventor confronts sea monsters, poison gas, virulent microbes, and a deep-sea race for life against a torpedo-armed foe!
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