He was accompanied by Kibo, the son of a chief of one of the tribes to the north of the desert, whom Mr Vincent purposed visiting. Kibo had been carried away from his home into slavery by the great Matabele leader Moselekatse, in one of his marauding expeditions against the territory inhabited by the lad’s tribe four or five years before this.

During a visit Mr Warden had paid to Moselekatse, he had seen young Kibo, then apparently on the point of death, and inducing the chief to give him his liberty, had carried him to the Missionary-station, where recovering, he was instructed in the truths of Christianity. The lad became a true and earnest convert, and his heart yearned to visit his parents and friends, and to tell them the good news he had heard. Mr Warden, believing him to be confirmed in the faith, had consented to his accompanying Martin, in the hopes that by his means his tribe might be induced to receive a missionary of the gospel among them.

The trader and his son rode on for some time in silence, the former indeed was beginning to feel too anxious about the chances of finding water at the end of the day’s journey to talk much. Already many hours had passed since they had left the last water-holes. Although there was still a sufficient supply in the leathern bottles carried in the waggon to prevent them and their men from feeling much inconvenience from thirst, both horses and oxen were already suffering from want of the moisture so necessary to enable them to swallow their food. They had stopped as usual during the heat of the day; but though there was an abundance of grass, it was so dry that it crumbled in the hand, and the poor animals as they chewed it turned it about in their mouths, in a vain endeavour to get it down their throats.

Robert Vincent had ordered his men to inspan or harness the cattle at an earlier hour than usual, hoping by pushing on to gain the promised pool before nightfall; but the oxen, already fatigued by their previous long journey, were unable to move as fast as usual, in spite of all the efforts of their driver.

The trader, at length losing patience, rode on by the side of the guide, and inquired when they were to reach the pool he had spoken of.

“Not till after the sun has sunk far beyond yonder distant line, unless the oxen move faster than they are now doing,” answered the guide, pointing to the western horizon.

The trader shouted to the driver. Again and again he made his huge whip crack, as he struck his team in succession, but without effect; nothing would induce the poor animals to hasten their steps.

“I am much inclined to ride forward, and try and find out the wells myself,” said Mr Vincent to his son. “I am not quite sure that our guide is not playing us false. If I thought so, I would shoot him through the head. It is wiser to trust to one’s own sagacity than to a treacherous guide.”

“O father! do not use violence,” exclaimed Martin. “Gentle words and kindness will have more effect in keeping him faithful. I have no fear about him, for he has long been known to Mr Warden, who has perfect confidence in him.”

“Why do you think he should have confidence in him, Martin?” asked his father.