Desperately, because he was afraid that she was about to run in panic out of the room, he made signs that he was not like this monster; he shook his head no, no, no. He wasn't, he wasn't, he wasn't!

Martia, watching him intently, began to relax. Her skin regained its pinkish hue. Her eyes became their normal size. She even managed a strained smile.

To get her mind off the subject, he indicated that he would like to know why the queen and her consort had digestive systems, though the workers did not. For answer, she reached up into the downhanging mouth of the worm suspended from the ceiling. Her hand, withdrawn, was covered with secretion. After smelling her fist, she gave it to him to sniff also. He took it, ignoring her slight and probably involuntary

flinching when she felt his touch.

The stuff had an odor such as you would expect from pre-digested food.

Martia then went to another worm. The two light organs of this one were not colored red, like the others, but had a greenish tint. Mania tickled its tongue with her finger and held out her cupped hands. Liquid trickled into the cup.

Lane smelled the stuff. No odor. When he drank the liquid, he discovered it to be a thick sugar water.

Martia pantomimed that the glowworms acted as the digestive systems for the workers. They also stored food away for them. The workers derived part of their energy from the glucose excreted by the roots of the trees. The proteins and vegetable matter in their diet originated from the eggs and from the leaves of the umbrella plant. Strips of the tough membranous leaf were brought into the tubes by harvesting parties which ventured forth in the daytime. The worms partially digested the eggs, dead leggers, and leaves and gave it back in the form of a soup. The soup, like the glucose, was swallowed by the workers and passed through the walls of their throats or into the long straight sac which connected the throat to the larger blood vessels. The waste products were excreted through the skin or emptied through the canal in the tongue.

Lane nodded and then walked out of the room. Seemingly relieved, Martia followed him. When they had crawled back into her quarters, she put the eggs in a refrigerator and poured two glasses of wine. She dipped her finger in both, then touched the finger to her lips and to his. Lightly, he touched the tip with his tongue. This, he gathered, was one more ritual, perhaps a bedtime one, which affirmed that they were at one and at peace. It might be that it had an even deeper meaning, but if so, it escaped him.

Martia checked on the safety and comfort of the worm in the bowl. By now it had eaten all its food. She removed the worm, washed it, washed the bowl, half filled it with warm sugar water, placed it on the table by the bed, and put the creature back in. Then she lay down on the bed and closed her eyes. She did not cover herself and apparently did not expect him to expect a cover.

Lane, tired though he was, could not rest. Like a tiger in its cage, he paced back and forth. He could not keep out of his mind the enigma of Martia nor the problem of getting back to base and eventually to the orbital ship. Earth must know what had happened.

After half an hour of this, Martia sat up. She looked steadily at him as if trying to discover the cause of his sleeplessness. Then, apparently sensing what was wrong, she rose and opened a cabinet hanging down from the wall. Inside were a number of books.

Lane said, "Ah, maybe I'll get some information now!" and he leafed through them all. Wild with eagerness, he chose three and piled them on the bed before sitting down to peruse them. Naturally, he could not read the texts, but the three had many illustrations and photographs. The first volume seemed to be a child's world history.

Lane looked at the first few pictures. Then he said, hoarsely, "My God, you're no more Martian than I am!"

Martia, startled by the wonder and urgency in his voice, came over to his bed and sat down by him. She watched while he turned the pages over until he reached a certain photo.Unexpectedly, she buried her face in her hands, and her body shook with deep sobs.

Lane was surprised. He wasn't sure why she was in such grief. The photo was an aerial view of a city on her home planet -- or some planet on which her people lived. Perhaps it was the city in which she had -- somehow -- been born.

It wasn't long, however, before her sorrow began to stir a response in him. Without any warning he, too, was weeping.

Now he knew. It was loneliness, appalling loneliness, of the kind he had known when he had received no more word from the men in the tanks and he had believed himself the only human being on the face of this world.

After a while, the tears dried. He felt better and wished she would also be relieved. Apparently she perceived his sympathy, for she smiled at him through her tears. And in an irresistible gust of rapport and affection she kissed his hand and then stuck two of his fingers in her mouth. This, he thought, must be her way of expressing friendship. Or perhaps it was gratitude for his presence. Or just sheer joy. In any event, he thought, her society must have a high oral orientation.

"Poor Martia," he murmured. "It must be a terrible thing to have to turn to one as alien and weird as I must seem. Especially to one who, a little while ago, you weren't sure wasn't going to eat you up."

He removed his fingers but, seeing her rejected look, he impulsively took hers in his mouth.

Strangely, this caused another burst of weeping. However, he quickly saw that it was happy weeping. After it was over, she laughed softly, as if pleased.

Lane took a towel and wiped her eyes and held it over her nose while she blew.

Now, strengthened, she was able to point out certain illustrations and by signs give him clues to what they meant.

This child's book started with an account of the dawn of life on her planet. The planet revolved around a star that, according to a simplified map, was in the center of the Galaxy.

Life had begun there much as it had on Earth. It had developed in its early stages on somewhat the same lines. But there were some rather disturbing pictures of primitive fish life. Lane wasn't sure of his interpretation, however, for these took much for granted.

They did show plainly that evolution there had picked out biological mechanisms with which to advance different from those on Earth.

Fascinated, he traced the passage from fish to amphibian to reptile to warmblooded but non-mammalian creature to an upright ground-dwelling apelike creature to beings like Martia.

Then the pictures depicted various aspects of this being's prehistoric life. Later, the invention of agriculture, working of metals, and so on.

The history of civilization was a series of pictures whose meaning he could seldom grasp. One thing was unlike Earth's history. There was a relative absence of warfare. The Rameseses, Genghis Khans, Attilas, Caesars, Hitlers, seemed to be missing.

But there was more, much more. Technology advanced much as it had on Earth, despite a lack of stimulation from war. Perhaps, he thought, it had started sooner than on his planet. He got the impression that Martia's people had evolved to their present state much earlier than Homo sapiens.

Whether that was true or not, they now surpassed man. They could travel almost as fast as light, perhaps faster, and had mastered interstellar travel.

It was then that Martia pointed to a page which bore several photographs of Earth, obviously taken at various distances by a spaceship.

Behind them an artist had drawn a shadowy figure, half-ape, half-dragon.

"Earth means this to you?" Lane said. "Danger? Do not touch?"

He looked for other photos of Earth. There were many pages dealing with other planets but only one of his home. That was enough.