"Tom Swift and His Deep Sea Hydrodome" The New Tom Swift Jr. Adventures by Victor Appleton II

In Tom Swift and His Deep-Sea Hydrodome, the eleventh book in The New Tom Swift Jr. Adventures series, Tom Swift is once again embroiled in another thrilling adventure. From the moment he finds himself tossed about helplessly in an undersea geyser to the time he faces possible death at the hands of his enemies, the young scientist fights to overcome many obstacles in putting his two latest inventions to use. When Tom discovers that helium on the ocean bottom had caused the geyser, he plunges into the task of building an underwater city of derricks and pipe lines to capture the gas. His astounding new water-repelling machine and phenomenal hydrodome made the gigantic operation possible. While at work at the undersea mountain site, Tom and his pal Bud Barclay uncover what seems to be pirate treasure, but find in the leaden chest a cache of death-dealing destruction. Time and again the young scientist's plans are nearly wrecked. A sinister, hooded figure attacks him in his laboratory, and a mysterious submarine nearly costs him his life. How Tom outwits his ruthless enemies and saves his country from grave danger makes a nerve-tingling story, packed with swift, tense, action and high-voltage suspense.