Nothing could be more astonishing than the enormous bounds of the kangaroo. The hind legs of the animal are twice as long as the front ones, and unbend like a spring. At the head of the flying troop was a male five feet high, a magnificent specimen of the _macropus giganteus_, an "old man," as the bushmen say.

For four or five miles the chase was vigorously pursued. The kangaroos showed no signs of weariness, and the dogs, who had reason enough to fear their strong paws and sharp nails, did not care to approach them. But at last, worn out with the race, the troop stopped, and the "old man" leaned against the trunk of a tree, ready to defend himself. One of the pointers, carried away by excitement, went up to him. Next minute the unfortunate beast leaped into the air, and fell down again completely ripped up.

The whole pack, indeed, would have had little chance with these powerful marsupia. They had to dispatch the fellow with rifles. Nothing but balls could bring down the gigantic animal.

Just at this moment, Robert was well nigh the victim of his own imprudence. To make sure of his aim, he had approached too near the kangaroo, and the animal leaped upon him immediately. Robert gave a loud cry and fell. Mary Grant saw it all from the brake, and in an agony of terror, speechless and almost unable even to see, stretched out her arms toward her little brother. No one dared to fire, for fear of wounding the child.

But John Mangles opened his hunting knife, and at the risk of being ripped up himself, sprang at the animal, and plunged it into his heart. The beast dropped forward, and Robert rose unhurt. Next minute he was in his sister's arms.

"Thank you, Mr. John, thank you!" she said, holding out her hand to the young captain.

"I had pledged myself for his safety," was all John said, taking her trembling fingers into his own.

This occurrence ended the sport. The band of marsupia had disappeared after the death of their leader. The hunting party returned home, bringing their game with them. It was then six o'clock. A magnificent dinner was ready. Among other things, there was one dish that was a great success. It was kangaroo-tail soup, prepared in the native manner.

Next morning very early, they took leave of the young squatters, with hearty thanks and a positive promise from them of a visit to Malcolm Castle when they should return to Europe.

Then the wagon began to move away, round the foot of Mount Hottam, and soon the hospitable dwelling disappeared from the sight of the travelers like some brief vision which had come and gone.

For five miles further, the horses were still treading the station lands. It was not till nine o'clock that they had passed the last fence, and entered the almost unknown districts of the province of Victoria.

CHAPTER XV SUSPICIOUS OCCURRENCES

AN immense barrier lay across the route to the southeast. It was the Australian Alps, a vast fortification, the fantastic curtain of which extended 1,500 miles, and pierced the clouds at the height of 4,000 feet.

The cloudy sky only allowed the heat to reach the ground through a close veil of mist. The temperature was just bearable, but the road was toilsome from its uneven character. The extumescences on the plain became more and more marked. Several mounds planted with green young gum trees appeared here and there. Further on these protuberances rising sharply, formed the first steps of the great Alps. From this time their course was a continual ascent, as was soon evident in the strain it made on the bullocks to drag along the cumbrous wagon. Their yoke creaked, they breathed heavily, and the muscles of their houghs were stretched as if they would burst. The planks of the vehicle groaned at the unexpected jolts, which Ayrton with all his skill could not prevent. The ladies bore their share of discomfort bravely.

John Mangles and his two sailors acted as scouts, and went about a hundred steps in advance. They found out practical paths, or passes, indeed they might be called, for these projections of the ground were like so many rocks, between which the wagon had to steer carefully.