An expedition team of scientists is exploring the planet Mercury. The constant rumblings of earthquakes and wind have shaken their ship, the Albireo. A small explorative party departs on tractors. It's then when the volcanic reaction starts. And it looks like the end of the team unless man's intelligence can beat the malevolent nature of a fiery planet!
The plans for the Ziegler heat ray have been stolen and are presently in the Arvanian embassy, where they are officially off-limits to the Americans. The American Secretary of War expects them to be smuggled out of the country at any moment. Arvania will then develop the weapon and, despite its postage-stamp size, become the most powerful nation on earth. The next logical step will be for it to declare war on the United States, which will lead to its downfall inside of three months!
America's greatest weapon, greater than the Atom Bomb, was its new, gigantic mechanical brain. It filled a whole mountain--and then it came to life...!
Zarlah the Martian is narrated by a young scientist who had hoped to make his fortune creating an unbreakable substitute for glass. By happy accident, he invented a device which allowed him to intercept communications from Mars.
How could a man tell the difference if all the reality of Earth turned out to be a cosmic hoax? Suppose it turned out that this was just a stage set for students of history?
To all who didn't know him, Curt George was a mighty hunter and actor. But this time he was up against others who could really act, and whose business was the hunting of whole worlds.
A man, identified only as the Chemist, discovers a microscopic world inside a golden ring. Soon, he becomes transfixed with a girl he observes there and determines to shrink himself down and find her. He does this by inventing two drugs, one pill to make him smaller and one pill to make him bigger. He then tells this plan to a group of friends, and asks them to safeguard the ring while he is away. Once he returns, he tells them all the story of his adventures inside the world of the ring.