"How far do you think we've come?" asked Tom sleepily.
Astro yawned and stretched before answering. "I'd say about fifteen miles, Tom."
"Seems more like a hundred and fifteen," moaned Roger who was sprawled on the ground. "I ache all over. Start at the top of my head and work down, and you won't find one square inch that isn't sore."
Tom grinned. He was tired himself, but the three-day march through the jungle had been three of the most exciting days in his life. Coming from a large city where he had to travel two hours by monorail to get to open green country, the curly-haired cadet found this passage through the wildest jungle in the solar system new and fascinating. He had seen flowers of every color in the spectrum, some as large as himself; giant shrubs with leaves so fine that they looked like spider webs; Venusian teakwood trees fifty to a hundred feet thick at the base with some twisted into strange spirals as their trunks, shaded by another larger tree, sought a clear avenue to the sun. There were bushes that grew thorns three inches long, hard as steel and thin as needles; jungle creepers, vines two and three feet thick, twisting around tree trunks and strangling them. He saw animals too, all double the size of anything on Earth because of the lighter Venusian gravity; insects the size of rats, rats the size of dogs, and wild dogs the size of ponies. Up in the trees, small anthropoids, cousins to the monkeys of Earth, scampered from limb to limb, screaming at the invaders of their jungle home. Smooth-furred animals that looked like deer, their horns curling overhead, scampered about the cadets like puppies, nuzzling them, nipping at their heels playfully, and barking as though in laughter when Astro roared at them for getting in the way.
But there were dangerous creatures in the jungle too; the beautiful but deadly poisonous brush snakes that lurked unseen in the varicolored foliage, striking out at anything that passed; animals resembling chipmunks with enlarged razor-sharp fangs, whose craving for raw meat was so great that they would attack an animal ten times its size; lizards the size of elephants with scales like armor plate that rooted in swampy ground for their food, but which would attack any intruder, charging with amazing speed, their three horns poised; and, finally, there were the monsters of Venus—giant beasts whose weights were measured in tons, ruled over by the most horrible of them all—the tyrannosaurus.
Fights to death between the jungle creatures were common sights for the boys during their march. They saw a weird soundless fight between a forty-foot snake and a giant vulture with talons nearly two feet across and a beak resembling a mammoth nutcracker. The vulture won, methodically cutting the reptile's body into sections, its beak slicing through the snake as easily as a knife going through butter.
More than once Astro spotted a dangerous creature, and telling Roger and Tom to stand back, he would level his shock rifle and blast it.
So far they had seen nothing of their prey—the tyrannosaurus. Tracks around the steaming swamps were as close as they had come. Once, late in the evening of the second day they caught a fleeting glimpse of a plant-eating brontosaurus lumbering through the brush.
All three of the boys had found it difficult to sleep in the jungle. The first two nights they had taken turns at staying on guard and tending the campfire. Nothing had bothered them, and on the third night out, they decided the fire would be enough to scare off the jungle animals. It was risky, but the continual fight through the jungle underbrush had tired the three boys to the bone and the few hours they stood guard were sorely missed the next day, so they decided to chance it.
Roger was already asleep. Astro had just finished checking his rifle to be ready for instant fire, when Tom threw the last log on the campfire and crawled into his sleeping bag.