“How much farther is it?” thought Nic; and he shaded his eyes by holding the hand which bore the gun across his forehead.

But he saw no better, and he winced from the touch, of the gun-lock, for it was hot.

Then on, still trusting to the horse more than to himself, for the air had grown thicker, and the mist hot, strange, and dazzling for a time. There were singing noises, too, in his ears, and as he gave his head a shake in his effort to get rid of them, he suddenly found that the dazzling mist had gone, and he could see right away to the notch—that dent in the mountains which seemed to lead him on and on, but only to recede as he advanced.

That clearness of vision did nut last, for the mist closed in again, lifted, and he saw a bright lake of beautiful silvery water, stretching out as far as he could see, and toward which with throbbing temples he urged on the horse. The next minute it had disappeared, and some one was calling him; the thickening of the air was not from mist, but as of smoke. He must, he felt, with a terrible sense of depression, have neared his devastated home, which was burning, and the light breeze was wafting the dense smoke all over the plain.

“What news to take back to his father!” he thought, in his despair, and this made his senses reel; something struck him heavily, and then he was looking up at the blue sky, as a dark object came between him and it.

For a few moments he must have been quite unconscious, while the next thing he saw was the horse’s muzzle close to his face.

He started up into a sitting position, for a dismal howl rang in his ears, followed by a loud joyous barking, which brought him to his feet, guessing the truth.

For the heat had produced that dimness of sight, tortured him with the sight of that imaginary lake, and finally brought on a bad attack of giddiness, which had made him reel in the saddle and fall heavily to the ground.

The shock had helped to revive him; and feeling better, he picked up his gun from where it lay beneath the horse, managed to climb back into the saddle, and the brave beast started on at once straight for a clump of trees about a mile away, while, before they were two-thirds of the distance, the dogs began to bark, and seemed to recover their strength, for they bounded on, and the horse broke into a gallop, following in their track.

A minute or two later Nic knew why, for there was a flash of light from amongst the trees, and soon after he had thrown himself from his horse’s back, and was upon his chest in the shade, drinking draughts that seemed to quench the fire in his throat, bathing his face, and listening to the gentle, sucking noise made by the horse where it stood knee deep, and to the barking and splashing of the two dogs as they revelled in the refreshing coolness of the great water-hole.