bulkhead doors and jamming them across the opening in the hull. The last door he arranged on a swivel so that it could be locked from either side. Then, exhausted by the hours of activity, he fell asleep.

When he awoke and went outside, he saw that the two suns had exactly altered their position. The larger was at the zenith now; the smaller, low on the horizon. The temperature was unchanged, and the air was crystal clear, with only a few fleecy clouds floating overhead.

Standish ate a hearty breakfast, then strapped one genithode pistol about his waist and headed across the ravine to begin his first trip of exploration.

The moment he entered the jungle he was conscious of an electric something that passed before him, telegraphed from tree to tree. The strange plants, neither cyads nor conifers, seemed aware of his presence, whispering among themselves.

Experimentally he touched one of the trunks. It quivered, the bark split apart, and a spongy tentacle whipped out to drive straight at his throat. Standish escaped the clawing coil by inches. The tree quivered again, and the tentacle returned to its hiding place.

He kept well away from the trees after that. But as he went on, he saw other forms of life, all manifesting an evolution in mixed stages of development. There was a low plant, brilliant purple in color which gave off a mewling cry whenever he stepped on one of its fronds. There were small lizard-birds, and occasionally he saw bluish masses growing melon-like on the ground. These had a single eye in the center of a spongy body. They watched him as he passed.

Once a small animal darted out before him. But when he approached, the creature instead of running for safety, thrust one paw in the soft earth, and a whitish blossom leaped up on a wavering stalk from its head. Within the flick of an eye, the thing had changed from animal to plant life.

It was at high noon by his Earth-time watch that Standish emerged into the glade. He stopped short, staring, then uttered a short cry.

Before him were buildings, low mushroom-like buildings arranged in a semi-circle. Fashioned of the same translucent rock he had seen on the cliff, they resembled the igloos of his own north country. Overhead a network of thick yellowish wire ran back and forth, separated at intervals by heavy white insulators.

He saw then that the structures were 

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