In spite of the hot sun beating down on their heads they went on. Still the oasis, if such it was, appeared as far off as ever. Roger, whose strength, though he was the youngest, held out, did his best to cheer them on. At last old Sam declared that he could go no farther, and sank down, begging the others to bring him water if they could find it. In vain they tried to persuade him to move along, and they supported him for some distance till they came to another sandhill, where they placed him under some bushes which might afford some slight protection. Having no fire-arms they could only leave him a pointed stick with which to defend himself. They now hurried on, eager to obtain water not only for themselves, but that they might rescue their shipmate from death. They were almost sinking when their eyes were cheered by a grove of trees, though still far off. Roger acknowledged that they could not have been visible from where he had supposed he had seen them.

“They are date-trees!” he exclaimed. “They will afford us food, and water we may hope to find under them.”

As they reached the oasis their eyes were gladdened by the sight of a small pool formed by a spring bubbling out of the earth. Falling on their knees they eagerly baled the water into their mouths with their hands. Thus revived, Jumbo was able to climb one of the trees and obtain as many bunches of dates as they wanted. They now thought of their old shipmate, but when the sun went down the sky became overcast, and to find him in the dark seemed impossible.

“We cannot let him die,” said Roger. “I am ready to run the risk.”

“And I will go with you,” said Stephen.

“I go too,” said Jumbo.

And much as they would have enjoyed the rest under the trees, they started without delay. Roger thought he knew the direction to take, and in the cool air of night travelling was easier than in the daytime. They did not trouble their heads about lions, or leopards, or beasts of prey; though ready to sink with fatigue, they went on till they fancied that they had reached the spot where they had left old Sam. They shouted his name, but no answer came. They searched about, keeping within hail of each other. At length Jumbo cried out, “Here he is, and he no speak.” They hurried up, but poor Sam was apparently at the last gasp. Having poured some water, however, down his throat, he somewhat revived.

“Thought you would never come back, mates,” he said; “but give me some more water and I will soon be myself again.” After a second draught of water Sam was able to eat a few dates, and now declared that he was ready, if they wished it, to go with them to the oasis; but Stephen and Roger were both too tired to walk so far, and throwing themselves down under the shelter of the bushes they fell asleep. The sun had already risen high when Roger awoke, and on going to the top of the sandhill to look out for the oasis, he saw between it and where he stood a number of objects. He called Stephen, who joined him.

“There are two parties on camels and horses, it seems to me,” said Stephen, “one flying from the other.”

Descending the sandhill they concealed themselves behind it lest they should be discovered; but Roger, unable to restrain his curiosity, crept on one side whence he could see what was taking place. The fugitives had turned round to meet their pursuers; a fierce fight was going forward, in which the camels on both sides seemed to be taking part by kicking and leaping at each other, and he could hear their peculiar cries amid the clash of the weapons and the shouts of the combatants. Presently he saw a person, who had apparently been thrown from his camel, come rushing at headlong speed towards the sandhill. Roger drew back, and in another minute the stranger came round to where the party lay. He was a mere boy, dressed in loose trousers, a silk jacket, a shawl round his waist, and a turban on his head. His alarm at seeing them was so great, that he was running on to avoid them, when Jumbo, who, it will be remembered, spoke Arabic, called to him gently, telling him that they were friends. On this he came and crouched down close to them, trembling in every limb.