an instinctive movement to rise. She doubtless took the man who had spoken for one of her pursuers. The latter smiled mournfully, and pointed to the two bandits lying on the ground.

"Look, Señorita," he said to her; "you have only a friend here."

At this sight an expression of unbounded gratitude illumined the wounded girl's face, and a sickly smile appeared on her lips; but almost immediately her features grew saddened again. She sprang up, and raising herself on the tips of her small feet, she stretched out her right arm toward a point on the horizon, and exclaimed in a voice broken by terror—

"There, there! Look!"

The stranger turned to the indicated direction. A party of horsemen were coming up at full speed, preceded about a rifle shot distance by another horseman, evidently better mounted than they, and whom they appeared to be pursuing. The stranger then remembered the furious galloping he had heard a few moments previously.

"Oh!" the girl exclaimed, clasping her hands in entreaty, "Save him, Señor! Save him!"

"I will try, Señorita," he replied, gently; "all that a man can do, I swear to do."

"Thank you," she said, offering him her pretty little hand; "you are a noble-hearted man, and Heaven will aid you."

"You must not remain here exposed to the insults of these men, who are evidently the comrades of those from whom you have just escaped."

"That is true," she said; "but what can I do? Where shall I seek shelter?"

"Follow me behind these trees; we have not a moment to lose."

"Come," she said, resolutely. "But you will save him! Will you not?"

"At least I will try. I have only my life to offer the person in whom you take an interest; and believe me, Señorita, I shall not hesitate to make the sacrifice."

The maiden looked down with a blush, and silently followed her guide. They soon reached the thicket in which the stranger had established his quarters for the night.

"Whatever happens," he said, while reloading his rifle, "remain here, Señorita. You are in safety in this hollow rock, where no one will dream of seeking you. For my part, I am going to help your friend."

"Go," she said, as she knelt down on the ground; "while you are fighting I will pray for you—and Heaven will grant my prayer."

"Yes," the stranger answered, mournfully, "God listens gladly to the voice of angels, so let us hope for the best."

He leaped on his horse; and after giving a parting glance at the maiden, who was praying fervently, he dashed at full speed in the direction of the newcomers. There were seven in number—bandits with stern faces and dangerous aspect, who dashed up brandishing their weapons and uttering horrible yells.

The pursued horseman, on seeing a man emerge so unexpectedly from the thicket, and come towards him at full speed, rifle in hand, naturally supposed that assistance was arriving for his foes, and dashed on one side to avoid a man whom he assumed, with some show of reason, to be an adversary the more. But the bandits were not mistaken when they saw the stranger not only let their prey escape, but stop in front of them and cock his rifle.

Two shots were fired at the same moment, one by a bandit the other by the stranger, with the difference, however, that the bandit's shot, being fired haphazard was harmless; while the stranger's, being deliberately aimed, struck exactly in the mass of his serried foes.

A few seconds later, one of them let go his bridle, beat the air with his arms, fell back on his horse, and at length on the ground, tearing with his huge spurs the sides of his steed, which reared, kicked, and started off like an arrow.

A war so frankly declared could not have a sudden termination: four shots succeeding each other with extreme rapidity on either side were a sufficient proof of this. But the stranger's position was growing critical: his rifle was discharged, and he had only his revolvers left.

The revolver, by the way, is a weapon more convenient than useful in a fight, for if you wish to hit your man, you must fire at him almost point blank, otherwise the bullets have a tendency to stray. This is a sufficient explanation why, in spite of the immoderate use the North Americans make of this weapon, the number of murders among them is proportionately limited.

The stranger was, therefore, somewhat embarrassed, and was preparing in his emergency for a hand-to-hand fight, when help he had been far from calculating on suddenly reached him.

The pursued horseman, on hearing the firing, and yet finding no bullets whizzed past him, understood that something unusual was taking place, and that some strange incident must have occurred in his favour. Hence he turned back, and saw one of his enemies fall. Recognising his mistake, he made up his mind at once: though only armed with a machete, he wheeled his horse round and bravely drew up alongside his defender.

Then the two men, without exchanging a word, resolutely dashed at the bandits. The contest was short—the success unhoped for. Moreover, the sides were nearly equal, for of the seven pirates only four were now alive.

The attack was so sudden, that the pirates had not time to reload. Two were killed with revolver shots. The third fell with his head severed by a machete blow from the horseman, who was burning to take an exemplary vengeance; while the fourth, finding himself alone leaped his horse over the corpses of his comrades, and fled at full speed without attempting to continue longer a combat which could not but be fatal to him.

The two men consequently remained masters of the battlefield.

CHAPTER II.

ON THE PRAIRIE.

When the last bandit had disappeared in the darkness, the horseman turned to his generous defender, in order to thank him; but the latter was no longer by his side, and he saw him galloping some distance off on the plain.

The horseman knew not to what he should attribute this sudden departure—(for the stranger was following a direction diametrically opposite to that on which the pirate had fled)—till he saw him return, leading another horse by the bridle.

The stranger had thought of the young lady he had so miraculously saved; and on seeing the horses of the killed bandits galloping about, he resolved at once to capture the best of them, in order to enable her to continue her journey more comfortably; and when the animal was lassoed, he returned slowly towards the man to whom he had rendered so great a service.

"Señor," the horseman said, as soon as they met again, "all is not over yet; I have a further service to ask of you."

"Speak, Caballero," the stranger replied, starting at the sound of the voice, which he fancied he recognised. "Speak, I am listening to you."

"A woman, an unhappy girl—my sister, in a word, is lost in this horrible desert. Some of the scoundrels started in pursuit of her, and I know not what may have happened to her. I am in mortal agony, and must rejoin her at all risks; hence do not leave the good action you have so well begun unfinished; help me to find my sister's track,—join with me in seeking her."

"It is useless," the stranger answered, coldly.

"What, useless!" the horseman exclaimed with horror; "Has any misfortune happened to her? Ah! I remember now; I fancied, while I was flying, that I heard several shots. Oh, Heaven, Heaven!" he added, writhing his hands in despair, "My poor sister, my poor Marianita!"

"Reassure yourself, Caballero," the stranger continued in the same cold deliberate accent; "your sister is in safety, temporarily at least, and has nothing to fear. Heaven permitted that I should cross her path."

"Are you stating truth?" he exclaimed, joyfully. "Oh, bless you, Señor, for the happy news! Where is she? Let me see her! Let me press her to my heart. Alas! How shall I ever acquit my debt to you?"

"You owe me