Korree was evidently a very primitive sort of savage in spite of his ability to speak. As Robin set out to re-cross this bubble and return to his own holdings, the creature wound in and out ahead of him, returning steadily to see if all was well. Korree had no clothes and no understanding of them. He had only his spear, which Robin had returned to him and he had apparently lost faith in that, the first time Robin used his bow and arrow on a yapping Moontiger. The trip through the dark tunnels back to Robin's original bubble was comparatively easy, for no sooner did they get into the darkness than Korree's light organ began to glow brightly enough to render Robin's lantern dim. When they came to the cleft, Robin had to pick the Moonman up and jump with him, for Korree's muscles were built only for Moon gravity and that leap was beyond his normal ability. Once back in what Robin now thought of as the safety of his original bubble, the two settled down to work together. Korree soon got the hang of the simple duties Robin gave him--feeding the rabbits, slaughtering, skinning, and tanning. They spent the time trying to learn each other's languages. Robin carefully jotted down each new sound or word he could identify in the Glassie's speech and Korree in turn seemed anxious to imitate the English. It took about four months before they had a working interchange of ideas. Robin found that the Glassie's language was quite limited in many ways, though having a great many variations of verb form--a typical characteristic of primitive tongues. Finally, however, Robin heard Korree's story. His people lived many bubbles away, possibly many months of travel, though the Glassie idea of time was very vague and seemed hedged around by all sorts of untranslatable mystic conditions. There were maybe several hundred of them and they formed one big tribe or family. There were many such tribes, usually one to a bubble-cavern. Korree indicated that somewhere--he pointed downward--were greater caverns where many tribes lived, tribes of great strength or magic or knowledge. Robin could not decide which was meant--probably all three. But Korree had never been there. These downward regions were taboo to his people. Robin's suspicion was that the Glassies from Korree's group had been forced to live in the less desirable outer areas by the stronger and more advanced races who had seized the better regions. Korree indicated that there were many bubbles that were not inhabited because of great terrors, either by heat or cold. Robin assumed he meant caverns of jungle and caverns more exposed to the surface temperatures.