Nothing daunted, Bob hurried on, replacing the used cartridge as he ran, and easily following the tracks that the animal had made in its dash for liberty.

Bob's pulses were thrilling with excitement, but his nerves were the real hunter's nerves that can be steady even when excitement runs highest. He gripped his gun firmly, and with eyes scaled to see each tremor of a leaf he followed the track with the dogged purpose of one who meant to capture.

Time and distance were unheeded now. All the boy's senses were converged towards one aim, and for the time being he was oblivious to all other distractions. Suddenly he stopped in the very midst of a pace, as if he were suddenly changed into a statue of marble; for at no great distance, he saw the deer standing at the edge of what seemed to be a natural paddock of green grass. The animal had paused in its flight, and was now sniffing the air with head raised, to discover if it were still pursued.

It was worth gun-shot.

Cautiously Bob raised his weapon without even moving from the strained position in which he had stopped at first glimpse of the game. It would be useless for him to approach closer, for the least disturbance of the bush would be discovered, and a few leaps would carry the deer across that stretch of green turf, and thence—probably beyond all chance of recovery.

Bob took a careful sight this time. Then he fired. Instantly the deer sprang upwards into the air, gave two marvellous leaps forward, and then fell in a lifeless heap right in the centre of the paddock.

Bob gave a cry of exultation and ran forwards towards his bag. So excited was he now that he did not notice how the turf shivered under his feet when first he stepped upon the edge of the clearing. He had no thoughts for aught else but the triumph of his stalking. But suddenly, when he was within a few yards of the deer, he felt one foot sink beneath him. For a moment he did not give the incident any serious thought, but placed his other foot a little beyond, where the turf seemed firmer. But the next step sunk deeper than the first, and at each effort to release the one the other sunk farther.

Then a cold sweat broke out all over the lad's body. He realised the plight that he was in, for the green sward was no more than a thin covering of turf that concealed a great muskeg—a lake of liquid mud such as has been known to swallow men, horses—nay, even a herd of buffalo, without leaving a trace of the hapless victims that have disappeared within that ever-hungry throat.

Bob stood still in horror at his terrible discovery.

He looked round him. There was not a sign of anything that might aid him—not a log, not so much as a twig. Nothing was at hand but the grass that a moment before had looked so fresh and alluring, but which now seemed to suggest all that was ugly and treacherous. Even the slain deer was already beginning to yield to the suction from beneath.