ENGINES of the GODS By GARDNER F. FOX The engine was the wealth of Mars. With it Kortha could save his people ... or the evil Guantra could rule the Universe. But neither could use the machine until its secret was solved--so they fought and schemed for the knowledge, and their planet lay on the brink of destruction. [Transcriber's Note: This etext was produced from Planet Stories Spring 1946. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] Kortha the smith brooded out over the great red waste of desert. Men said Kortha was a genius. Men said he was the biggest man on Mars, and strong as an anthropoid ape. But Kortha brooded, because Kortha was a coward. He was not afraid for himself. He was afraid _of_ himself. He looked at his sun-bronzed, hamlike hands, and shuddered; glistening beads of sweat appeared on his forehead. With those hands he had killed men, and had crippled his best friend for life. Behind him gleamed the red _utta_-brick smithy and his small shack, and the tiny structure he called his laboratory. Swinging on his heel, he went away from the desert and into the smithy. He made the bellows leap, and the red flames spurt from the furnace. With the tongs he lifted a white-hot strip of metal and pounded on it with a sledge that an ordinary man would have found immovable. In the clang and dance of hammer on anvil, he lost himself; listened only to the mad symphony of beaten metal instead of the still, small voices of his soul. The din of smitten steel jangling on the sootblacked anvil was the music that helped the giant forget his heart. His eyes gleamed red from the smarting flames, and he peered into their depths with green eyes wide and angry as though he beheld a corner of some lost hell. He did not hear the muffled thunder of the 'copter that swung in a circle above his shack and swooped downward to dig its tires into the yielding sands. He did not see the door open, and who came out. "Kortha," said a voice like a song. He started then; looked up, brows furrowed. His eyes opened a trifle in astonishment. "Ilse!" he whispered. The hammer fell from his grasp and bounced on the brick floor. The girl with the hair like spun flax laughed softly and leaned against the wooden door. A white cloak clasped with a fiery ruby draped her shoulders. She wore gauze trousers with broad leather belt studded with jewels, and a bolero of _arket_-fur. Her white midriff was bare. "You ran away, Kortha," she accused, her dark eyes gleaming like uncut sapphires from the tanned oval of her face. "You ran away from Hurlgut when he needed you. It took me a long time to learn where you had holed." "Three years," said Kortha softly, wiping grimy hands on the white fur that clasped his hard loins beneath the leathern apron.