Mile upon mile lay behind him as he rushed onwards, always pointing a little on the upward slope, drunk with speed. The earth faded away to a dark expanse of shadow beneath him, and he no longer was conscious of the deep murmur that usually flowed steadily upwards from its surface. He had often before risen out of reach of the earth noises, but never so far that this dull reverberating sound, combined of all the voices of the world merged together, failed to make itself heard. To-night, however, he heard nothing. The stars above his head changed from yellow to diamond white, and the cold air stung his cheeks and brought the water to his eyes.

But at length the governess's warning, as he explored these forbidden regions, came back to him, and in a series of gigantic bounds that took his breath away completely, he dropped nearer to the earth again and kept on at a much lower level.

The hours passed and the position of the moon began to alter noticeably. Some of the constellations that were overhead when he started were now dipping below the horizon. Never before had he ventured so far from home, and he began to realise that he had been flying much longer than he knew or intended. The speed had been terrific.

The change came imperceptibly. With the discovery that his wings were not moving quite so easily as before, he became suddenly aware that this had really been the case for some little time. He was flying with greater effort, and for a long time this effort had been increasing gradually before he actually recognised the fact.

Although no longer pointing towards the earth he seemed to be sinking. It became increasingly difficult to fly upwards. His wings did not seem to fail or weaken, nor was he conscious of feeling tired; but something was ever persuading him to fly lower, almost as if a million tiny threads were coaxing him downwards, drawing him gradually nearer to the world again. Whatever it was, the earth had come much closer to him in the last hour, and its familiar voices were pleasant to hear after the boundless heights he had just left.

But for some reason his speed grew insensibly less and less. His wings moved apparently as fast as before, but it was harder to keep up. In spite of himself he kept sinking. The sensation was quite new, and he could not understand it. It almost seemed as though he were being pulled downwards.

Jimbo began to feel uneasy. He had not lost his bearings, but he was a very long way from home, and quite beyond reach of the help he was so accustomed to. With a great effort he mounted several hundred feet into the air, and tried hard to stay there. For a short time he succeeded, but he soon felt himself sinking gradually downwards again. The force drawing him was a constant force without rise or fall; and with a deadly feeling of fear the boy began to realise that he would soon have to yield to it altogether. His heart beat faster and his thoughts turned to the friend who was then far away, but who alone could save him.

She, at least, could have explained it and told him what best to do. But the governess was beyond his reach. This problem he must face alone.

Something, however, had to be done quickly, and Jimbo, acting more as the man than as the boy, turned and flew hurriedly forward in another direction. He hoped this might somehow counteract the force that still drew him downwards; and for a time it apparently did so, and he flew level. But the strain increased every minute, and he looked down with something of a shudder as he realised that before very long he would be obliged to yield to this deadly force—and drop!