claim to a quarter of the habitable zone of Venus, with the other three quarters being occupied by the United Kingdom, France, and the Netherlands. Plot summary Hamilton "Ham" Hammond is an American trader who lives in the Venusian Hotlands in the late 21st century. He makes his living collecting xixtchil spore-pods from the native Venusians, which are used to make a rejuvenation drug on Earth. When Hammond's shack is sucked under the surface by a mud-spout, he must make his way across 200 miles of hot, humid, hostile Venusian jungle to reach Erotia, a settlement in the American part of the planet. Hammond comes upon a human dwelling which, contrary to custom, is locked. He forces his way inside and is confronted by Patricia Burlingame, daughter of the late British explorer Patrick Burlingame. As Hammond is in the British part of Venus, Burlingame denounces him as a poacher. A confrontation between the two is interrupted by the arrival of a doughpot which wrecks Burlingame's dwelling. The two grudgingly set aside their differences and travel west to the Cool Country, saving each other's lives on several occasions. Their truce ends when Hammond wakes to find that Burlingame has emptied his xixtchil pods onto the ground, exposing them to the destructive spores. Now destitute, Hammond angrily sets off north toward Erotia, leaving Burlingame to make her way south through the impassable Mountains of Eternity to the British settlement of Venoble alone. After a time, Hammond suffers an attack of conscience, turns, and follows Burlingame south. He catches up with her in the foothills of the Eternities just before a huge doughpot traps them in a box canyon. Hammond is able to get off two shots of his flame pistol at the doughpot before the barrel shatters, reducing the thing's size but still leaving them trapped. They decide to go deeper into the box canyon, but in the darkness they are set upon by Triops noctivivans, vicious nightside-dwelling cousins of the Venusians. The trioptes drive them back toward the doughpot, dosing Burlingame with a soporific drug that renders her unconscious. Hammond is forced to make his way past the doughpot on a low, narrow shelf of rock while carrying Burlingame. The two make it past the doughpot; when the pursuing trioptes arrive, they stop chasing the humans and start eating the doughpot instead. When Burlingame revives, she admits that instead of destroying