right to expect from them after one is once fairly on his way. We shall meet with no water to-day, and it is specially for this part of the journey that we brought the water-skins with us."

"I noticed that you did not fill them half full at the last stream we crossed."

"No, it was not necessary; the horses will have a good drink at a stream we shall cross in a couple of hours, and we shall fill the skins there; beyond that we enter the mountains and travel through an extremely difficult pass, or, rather, I should say, passes, till we come down into the valley. The carts do not come this way; they strike the Colorado River many miles down and follow its bank. It is at least a third longer, but if it were three times as long they would have to go that way; the passes are difficult enough for horses, but they would be impossible for wheeled carriages."

After riding for thirty miles they halted for half an hour; the horses were watered, and the men ate some of the meat they had cooked overnight and some cold pancakes that had been fried in deer's fat. They were now far up on the hillside and following a regular track.

"Another hour's sharp climbing and we shall be on the top summit of the pass. See to the priming of your rifles and pistols. If we are not attacked before we reach the top I shall admit that I have been wrong, and that the attack upon me was, after all, the work of street ruffians."

The four vaqueros were ordered to look to their pistols before remounting; they did not carry guns.

"Do you expect an attack, master?" one asked. "I have not heard of there being any bands on the road just lately, but of course there may be some, and this bit of road is their favourite lurking-place, as the traffic between San Filepi and the Chatenezonais Valley all comes this way."

"I do not know that I expect to be attacked, Lopez, but I have grounds for suspecting that it is possible. If we should be ambushed, dismount at once, and take up your position behind the rocks and fight them in their own way. If the road were good enough I should say gallop on, but it is too steep and too rough for that."

Will Harland soon found that his friend had not exaggerated the difficulty of the pass. On both sides the hills sloped very steeply and were covered by boulders. The track in the middle of the ravine was just wide enough for a cart, but at distances of two hundred or three hundred yards apart the rock had been cut away for some twenty yards, so that two or three carts could draw aside there to allow others coming the other way to pass. As it was inconvenient for two to ride abreast, Juan said: "We had better go in single file."

"Yes, and I will ride first," Will replied. "If there should be a fellow hiding among these rocks, it will be you they are after, and, riding first, you would present an easy mark for them; whereas, if I am first, they won't be able to aim at you till you are pretty nearly abreast of them."

"I don't like that," Juan began, but Will pushed his horse forward. Both had unslung their rifles from their shoulders, and were carrying them in readiness for instant use.

"Keep your eyes on the rocks," Juan said to the men behind him; "if one of you sees the least movement give a shout, and all throw yourselves at once off your horses."

It would, however, have been no easy matter to distinguish a man's head among the masses of rock and boulders through which in many places brushwood and small trees had sprung up, and, although all kept scanning the hillsides minutely, nothing suspicious was heard, until suddenly a shot was fired from a spot some forty feet up the rocks on the left-hand side. Will instantly swung himself to the ground, gave a sharp slap on his horse's quarters, and ensconced himself behind a rock, while the animal, relieved from the weight of his rider, made his way rapidly along the path. The first shot had been followed by half a dozen others. These came from both sides of the ravine, and a ball striking the rock close to Will's head, showed him that his position was no more safe there than it would have been on horseback. He therefore made a rush upward, and took up a position between two rocks which covered him from either side. Then he took advantage of some bushes and crawled some yards farther along, until he came to a spot where he could lie in shelter, and yet obtain a view through the bushes both above and below him.

"Are you all right, Juan?" he shouted.

The answer came from rocks on the other side. "Yes; the ball aimed at me has killed my horse, but I am unhurt. Lopez is killed."

For some time shots were fired at intervals. Juan shouted to the vaqueros not to use their pistols.

"You would have no chance of hitting them," he said, "and they would only pick you off one by one. Lie quiet for the present; keep your shots till they come to close quarters. Now, Will," he said in English, "you watch the rocks above me, and I will watch those above you. Mark, if you can, where a shot is fired; lie with your rifle pointed at it until the fellow stands up to fire again, and then let him have it."

Four shots were fired almost together from Will's side, the assailants aiming in the direction from which the voice had come, but Will had no doubt that Juan had foreseen this and was in shelter when he spoke. Presently he saw a puff of smoke shoot out from the side of a large rock. He brought his rifle to bear upon it and watched intently. Three minutes later a head appeared cautiously round the rock, then a shoulder appeared, and a rifle was pointed towards the spot behind which he had first sheltered. He fired, there was a sharp scream, and the rifle went clattering down, exploding as it fell. The moment that he had fired, Will drew back into the shelter of the stone. Two other shots rang out, and the balls cut up and scattered the small pebbles on which he had been lying. He was able to observe, however, the position of one of his assailants. While he was reloading he heard the crack of Juan's rifle, followed by an exclamation of satisfaction.

"That is two of them, Will. They will soon get tired of this game."

The distances were so short, in fact, that it was almost impossible for even an indifferent shot to miss his aim when he once caught sight of the head of an enemy. Presently another shot struck the rock close to Will. It was fired some paces from the stone that he was watching, and showed that the assailants were using the same tactics that he had done, and were shifting their positions after firing. He moved a few yards away, and did not answer to the next two or three shots that were fired.

"He is done for," he heard one of the men on the other side of the ravine say. They were but some fifty feet away from him, and it was, therefore, easy to catch their words as they shouted from one to the other.

"Well, then, go down and attack the man we want," another voice said. "No one but the Englishman had a rifle over there, so you are quite safe."

"You had better come and show us the way. We did not bargain for this sort of thing. You said we should settle it all in one volley."

"So you would have done, you fools, if you could have shot straight. Who could have supposed that you were all going to miss at that distance. Why, a child of ten years old would have fired straighter. However, I am ready to lead the way. You, over there, make a rush when we do."

Will marked the exact position of the speaker. It was behind a large boulder some fifteen yards up the hill and as much ahead of him; he saw that to join the men who had been firing he would have to pass an open space between that and some other large masses of rock, and he laid his sights on that spot. The speaker, who was evidently confident that he was killed, and that therefore there was no danger of a shot being fired at him while he moved to join the others, appeared half a minute later. He was stooping, and held a pistol in each hand. The moment his body appeared in the line of fire Will pressed the