The beings were clearly gesturing to him, trying to signal with their odd arms. He waved back, wondering how he could establish communication. As he did so, he described the creatures to Russ.
Russ's voice was excited. "Say! I think I've figured out what sort of place I'm in. This is a museum of galactic life! Each of these glass cases contains a specimen of the highest form of life of its particular world. In one of the cases, opposite me, there's one of the Martian creatures—a big, antlike fellow. He's standing there, looking perfectly alive, but absolutely motionless. Next to him is something else that looks like an intelligent form. It's sort of a man, covered with short red hair. Around its waist it's got a belt, and there are pouches on it, and something like a short sword. It must be a humanoid type from some world out among the stars. Some of the others look like intelligent forms, too, because they are wearing clothing.
"I think that collecting these specimens and setting them up here is part of the religion of the Sun-tappers."
While Russ was talking, Burl thought of a way he might communicate with the stick-men. He wanted to draw a diagram of the solar system on the floor of his enclosure. He gestured futilely with his hand, but there was nothing with which to make a marking. The stick-men outside watched his hand, then one of them reached around to something hanging across its back and withdrew a thin tablet and a wedge of red. Holding the tablet up so that Burl could see, the creature quickly sketched a recognizable map of the Sun and its planets!
Burl realized then that he was dealing with highly intelligent beings—no savages, these, but the products of a high civilization. He indicated the third world as his own. The stick-man drew back as if surprised, then pointed upward.
They came from Neptune!
During the next few hours, a most curious three-way discussion went on—Burl signaling to the Neptunians outside and describing his discoveries to Russ over the phone of his space suit; Russ suggesting answers to some of the more difficult diagrams. It was a curious experience. Gradually, by means of simple drawings and gestures, and even charadelike playlets acted out by the weird vegetable-crystal beings, there emerged the general story of the Neptunians and the invaders from Pluto.
On Neptune there had been a great civilization covering the entire world, a hard surface lying deep beneath its thick methane atmosphere. There were forests and there were animals and intelligent beings. They did not breathe, but absorbed both their food and liquid gas through rootlike feelers on which they stood and moved.
Then one day, about thirty years ago, they had been invaded by creatures that came in dumbbell-shaped spaceships, and which had destroyed their cities, and attempted to conquer the planet. They learned that these ships had come from Triton, the strange new moon that Neptune had acquired about a thousand years earlier, and from the new planet, Pluto, their astronomers had observed at that time.
For thirty years the Neptunians had fought against the invaders. For a while they almost succeeded, but then something new had developed. Their world grew hotter. Great structures had been erected on the poles, the areas first conquered by the Plutonians and still held by them. From these spots, vast amounts of heat surged over the planet and changed it.