TOM SWIFT AND HIS
ELECTRONIC HYDROLUNG

by VICTOR APPLETON II

The legendary Sargasso Sea and Devil's Triangle disclose new mysteries as Tom Swift searches for a pirated space probe bearing a priceless payload — cometary matter from the dawn of our solar system. The quest takes an eerie turn when Tom's new detection device reveals an inexplicable gravitational anomaly that may be a fantastic seacraft a half-mile wide!
    To pursue the undersea search in the jungles of Sargasso weed, the young inventor must perfect his electronic hy- drolung and jet-thrust diversuit, which provide deep divers with the freedom and mobility of true marine animals. Yet looming over the project is a desperate plea for Tom's help in preventing a political assassination on the island of Mer-Soleil, a nation in upheaval.
     No sooner have Tom and his pal Bud braved the acid-oozing vegetation of the sea floor than an astonishing secret is brought to light — clue to a cosmic event of unimaginable violence that not only changed the face of our world, but of human history as well!
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