They resumed the journey early the next day, Bright Sun telling Conway that they could reach the range before sunset, and that they would find there an easy pass leading a mile or two farther on to a protected and warm glen.  
"That's the place for our camp," said Conway, and he urged the train forward.
 
The traveling was smooth and easy, and they soon left the little blue lake well behind, passing through a pleasant country well wooded with elm, ash, birch, cottonwood, and box elder, and the grass growing high everywhere. They crossed more than one clear little stream, a pleasant contrast to the sluggish, muddy creeks of the prairies.
 
The range, toward which the head of the train was pointing, now came nearer. The boys saw its slopes, shaggy with dark pine, and they knew that beyond it lay other and higher slopes, also dark with pine. The air was of a wonderful clearness, showing in the east and beyond the zenith a clear silver tint, while the west was pure red gold with the setting sun.
 
Nearer and nearer came the range. The great pines blurred at first into an unbroken mass, now stood out singly, showing their giant stems. Afar a flash of foamy white appeared, where a brook fell in a foamy cascade. Presently they were within a quarter of a mile of the range, and its shadow fell over the train. In the west the sun was low.
 
"The pass is there, straight ahead," said Bright Sun, pointing to the steep range.
 
"I don't see any opening," said Conway.
 
"It is so narrow and the pines hide it," rejoined Bright Sun, "but it is smooth and easy."
 
Albert was at the rear of the train. He had chosen to walk in the later hours of the afternoon. He had become very tired, but, unwilling to confess it even to himself, he did not resume his place in the wagon. His weariness made him lag behind.
 
Albert was deeply sensitive to the impressions of time and place. The twilight seemed to him to fall suddenly like a great black robe. The pines once more blurred into a dark, unbroken mass. The low sun in the west dipped behind the hills, and the rays of red and gold that it left were chill and cold.
 
"Your brother wishes to see you. He is at the foot of the creek that we crossed fifteen minutes ago."
 
It was Bright Sun who spoke.
 
"Dick wants to see me at the crossing of the creek! Why, I thought he was ahead of me with the train!" exclaimed Albert.
 
"No, he is waiting for you. He said that it was important," repeated Bright Sun.
 
Albert turned in the darkening twilight and went back on the trail of the train toward the crossing of the creek. Bright Sun went to the head of the train, and saw Dick walking there alone and looking at the hills.
 
"Your brother is behind at the creek," said Bright Sun. "He is ill and wishes you. Hurry! I think it is important!"
 
"Albert at the creek, ill?" exclaimed Dick in surprise and alarm. "Why, I thought he was here with the train!"
 
But Bright Sun had gone on ahead. Dick turned back hastily, and ran along the trail through the twilight that was now fast merging into the night.
 
"Al, ill and left behind!" he exclaimed again and again. "He must have overexerted himself!"
 
His alarm deepened when he saw how fast the darkness was increasing. The chill bars of red and gold were gone from the west. When he looked back he could see the train no more, and heard only the faint sound of the cracking of whips. The train was fast disappearing in the pass.
 
But Dick had become a good woodsman and plainsman. His sense of direction was rarely wrong, and he went straight upon the trail for the creek. Night had now come but it was not very dark, and presently he saw the flash of water. It was the creek, and a few more steps took him there. A figure rose out of the shadows.
 
"Al!" he cried. "Have you broken down? Why didn't you get into the wagon?"
 
"Dick," replied Albert in a puzzled tone, "there's nothing the matter with me, except that I'm tired. Bright Sun told me that you were here waiting for me, and that you had something important to tell me. I couldn't find you, and now you come running."
 
Dick stopped in amazement.
 
"Bright Sun said I was waiting here for you, and had something important to tell you?" exclaimed Dick. "Why, he told me that you were ill, and had been left unnoticed at the crossing!"
 
The two boys stared at each other.
 
"What does it mean?" they exclaimed together.
 
From the dark pass before them came a sound which in the distance resembled the report of a firecracker, followed quickly by two or three other sounds, and then by many, as if the whole pack had been ignited at once. But both boys knew it was not firecrackers. It was something far more deadly and terrible—a hail of rifle bullets. They looked toward the pass and saw there pink and red flashes appearing and reappearing. Shouts, and mingled with them a continuous long, whining cry, a dreadful overnote, came to their ears.
 
"The train has been attacked!" cried Dick. "It has marched straight into an ambush!"
 
"Indians?" exclaimed Albert, who was trembling violently from sheer physical and mental excitement.
 
"It couldn't be anything else!" replied Dick. "This is their country! And they must be in great force, too! Listen how the fight grows!"
 
The volume of the firing increased rapidly, but above it always rose that terrible whining note. The red and pink flashes in the pass danced and multiplied, and the wind brought the faint odor of smoke.
 
"We must help!" exclaimed Dick. "One can't stand here and see them all cut down!"
 
He forgot in his generous heart, at that moment, that he disliked Conway and all his men, and that he and Albert had scarcely a friend in the train. He thought only of doing what he could to beat back the Indian attack, and Albert felt the same impulse. Both had their rifles—fine, breech-loading, repeating weapons, and with these the two might do much. No one ever parted with his arms after entering the Indian country.
 
"Come on, Albert!" exclaimed Dick, and the two ran toward the pass. But before they had gone a hundred yards they stopped as if by the same impulse. That terrible whining note was now rising higher and higher. It was not merely a war whoop, it had become also a song of triumph. There was a certain silvery quality in the night air, a quality that made for illumination, and Dick thought he saw dusky forms flitting here and there in the mouth of the pass behind the train. It was only fancy, because he was too far away for such perception, but in this case fancy and truth were the same.
 
"Hurry, Dick! Let's hurry!" exclaimed the impulsive and generous
Albert. "If we don't, we'll be too late to do anything!"
 
They started again, running as fast as they could toward that space in the dark well where the flashes of red and blue came and went. Dick was so intent that he did not hear the short, quick gasps of Albert, but he did hear a sudden fall beside him and stopped short. Albert was lying on his back unconscious. A faint tinge of abnormal red showed on his lips.
 
"Oh, I forgot! I forgot!" groaned Dick.
 
Such sudden and violent exertion, allied with the excitement of the terrible moment, had overpowered the weak boy. Dick bent down in grief. At first he thought his brother was dead, but the breath still came.
 
Dick did not know what to do. In the pass, under the shadow of night, the pines, and the mountain wall, the battle still flared and crackled, but its volume was dying. Louder rose the fierce, whining yell, and its note was full of ferocity and triumph, while the hoarser cries of the white men became fewer and lower. Now Dick really saw dusky figures leaping about between him and the train. Something uttering a shrill, unearthly cry of pain crashed heavily through the bushes near him and quickly passed on. It was a wounded horse, running away.
 
Dick shuddered. Then he lifted Albert in his arms, and he had the forethought, even in that moment of excitement and danger, to pick up Albert's rifle also. Strong as he naturally was, he had then the strength of four, and, turning off at a sharp angle, he ran with Albert toward a dense thicket which clustered at the foot of the mountain wall.
 
He went a full three hundred yards before he was conscious of weariness, and he was then at the edge of the thicket, which spread over a wide space. He laid Albert down on some of last year's old leaves, and then his quick eyes caught the sight of a little pool among some rocks. He dipped up the water in his felt hat, and after carefully wiping the red stain from his brother's lips, poured the cold fluid upon his face.
 
Albert revived, sat up, and tried to speak, but Dick pressed his hand upon his mouth.
 
"Nothing above a whisper, Al," he said softly. "The fight is not yet wholly over, and the Sioux are all about."
 
"I fainted," said Albert in a whisper. "O Dick, what a miserable, useless fellow I am! But it was the excitement and the run!"
 
"It was doubtless a lucky thing that you fainted," Dick whispered back. "If you hadn't, both of us would probably be dead now."
 
"It's not all over yet," said Albert.
 
"No, but it soon will be. Thank God, we've got our rifles. Do you feel strong enough to walk now, Al? The deeper we get into the thicket the better it will be for us."
 
Albert rose slowly to his feet, rocked a little, and then stood straight.
 
Only a few flashes were appearing now in the pass. Dick knew too well who had been victorious. The battle over, the Sioux would presently be ranging for stragglers and for plunder. He put one arm under Albert, while he carried both of the rifles himself. They walked on through the thicket and the night gradually darkened. The silvery quality was gone from the air, and the two boys were glad. It would not be easy to find them now. In the pass both the firing and the long, whining whoop ceased entirely. The flashes of red or blue appeared no more. Silence reigned there and in the valley. Dick shivered despite himself. For the moment the silence was more terrible than the noise of battle had been. Black, ominous shadows seemed to float down from the mountains, clothing all the valley. A chill wind came up, moaning among the pines. The valley, so warm and beautiful in the day, now inspired Dick with a sudden and violent repulsion. It was a hateful place, the abode of horror and dread. He wished to escape from it.
 
They crossed the thicket and came up against the mountain wall. But it was not quite so steep as it had looked in the distance, and in the faint light Dick saw the trace of a trail leading up the slope among the pines. It was not the trail of human beings, merely a faint path indicating that wild animals, perhaps cougars, had passed that way.
 
"How are you feeling, Al?" he asked, repeating his anxious query.
 
"Better. My strength has come back," replied his brother.
 
"Then we'll go up the mountain. We must get as far away as we can from those fiends, the Sioux. Thank God, Al, we're spared together!"
 
Each boy felt a moment of devout thankfulness. They had not fallen, and they were there together! Each also thought of the singular message that Bright Sun had given to them, but neither spoke of it.
 
They climbed for more than half an hour in silence, save for an occasional whisper. The bushes helped Albert greatly. He pulled himself along by means of them, and now and then the two boys stopped that he might rest. He was still excited under the influence of the night, the distant battle, and their peril, and he breathed in short gasps, but did not faint again. Dick thrust his arm at intervals under his brother's and helped him in the ascent.
 
After climbing a quarter of an hour, they stopped longer than usual and looked down at the pass, which Dick reckoned should be almost beneath them. They heard the faint sound of a shot, saw a tiny beam of red appear, then disappear, and after that there was only silence and blank darkness.
 
"It's all over now," whispered Albert, and it was a whisper not of caution, but of awe.
 
"Yes, it's all over," Dick said in the same tone. "It's likely, Al, that you and I alone out of all that train are alive. Conway and all the others are gone."
 
"Except Bright Sun," said Albert.
 
The two boys looked at each other again, but said nothing. They then resumed their climbing, finding it easier this time. They reached a height at which the undergrowth ceased, but the pines, growing almost in ordered rows, stretched onward and upward.
 
Dick sent occasional glances toward the pass, but the darkness there remained unbroken. Every time he turned his eyes that way he seemed to be looking into a black well of terror.
 
Both Dick and Albert, after the first hour of ascent, had a feeling of complete safety. The Sioux, occupied with their great ambush and victory, would not know there had been two stragglers behind the train, and even had they known, to search for them among the dense forests of distant mountain slopes would be a futile task. Dick's mind turned instead to the needs of their situation, and he began to appreciate the full danger and hardship of it.
 
Albert and he were right in feeling thankful that they were spared together, although they were alone in the wilderness in every sense of the word. It was hundreds of miles north, east, south, and west to the habitations of white men. Before them, fold on fold, lay unknown mountains, over which only hostile savages roamed. Both he and Albert had good rifles and belts full of cartridges, but that was all. It was a situation to daunt the most fearless heart, and the shiver that suddenly ran over Dick did not come from the cold of the night.
 
They took a long rest in a little clump of high pines and saw a cold, clear moon come out in the pale sky. They felt the awful sense of desolation and loneliness, for it seemed to them that the moon was looking down on an uninhabited world in which only they were left. They heard presently little rustlings in the grass, and thought at first it was another ambush, though they knew upon second thought that it was wild creatures moving on the mountain side.
 
"Come, Al," said Dick. "Another half hour will put us on top of the ridge, and then I think it will be safe for us to stop."
 
"I hope they'll be keeping a good room for us at the hotel up there," said Albert wanly.
 
Dick tried to laugh, but it was a poor imitation and he gave it up.
 
"We may find some sort of a sheltered nook," he said hopefully.
 
Dick had become conscious that it was cold, since the fever in his blood was dying down. Whenever they stopped and their bodies relaxed, they suffered from chill. He was deeply worried about Albert, who was in no condition to endure exposure on a bleak mountain, and wished now for the buffalo robe they had regarded as such a fine trophy.
 
They reached the crest of the ridge in a half hour, as Dick had expected, and looking northward in the moonlight saw the dim outlines of other ridges and peaks in a vast, intricate maze. A narrow, wooded valley seemed to occupy the space between the ridge on which they stood and the next one parallel to it to the northward.
 
"It ought to be a good place down there to hide and rest," said
Albert.
 
"I think you're right," said Dick, "and we'll go down the slope part of the way before we camp for the night."
 
They found the descent easy. It was still open forest, mostly pine with a sprinkling of ash and oak, and it was warmer on the northern side, the winds having but little sweep there.
 
The moon became brighter, but it remained cold and pitiless, recking nothing of the tragedy in the pass. It gave Dick a chill to look at it. But he spent most of the time watching among the trees for some sheltered spot that Nature had made. It was over an hour before he found it, a hollow among rocks, with dwarf pines clustering thickly at the sides and in front. It was so well hidden that he would have missed it had he not been looking for just such a happy alcove, and at first he was quite sure that some wild animal must be using it as a den.
 
He poked in the barrel of his rifle, but nothing flew out, and then, pulling back the pine boughs, he saw no signs of a previous occupation.
 
"It's just waiting for us, Al, old fellow," he said gayly, "but nothing of this kind is so good that it can't be made better. Look at all those dead leaves over there under the oaks. Been drying ever since last year and full of warmth."
 
They raked the dead leaves into the nook, covering the floor of it thickly, and piling them up on the sides as high as they would stay, and then they lay down inside, letting the pine boughs in front fall back into place. It was really warm and cozy in there for two boys who had been living out of doors for weeks, and Dick drew a deep, long breath of content.
 
"Suppose a panther should come snooping along," said Albert, "and think this the proper place for his bed and board?"
 
"He'd never come in, don't you fear. He'd smell us long before he got here, and then strike out in the other direction."
 
Albert was silent quite a while, and as he made no noise, Dick thought he was asleep. But Albert spoke at last, though he spoke low and his tone was very solemn.
 
"Dick," he said, "we've really got a lot to be thankful for. You know that."
 
"I certainly do," said Dick with emphasis. "Now you go to sleep,
Al."
 
Albert was silent again, and presently his breathing became very steady and regular. Dick touched him and saw that he was fast asleep. Then the older boy took off his coat and carefully spread it on the younger, after which he raked a great lot of the dry leaves over himself, and soon he, too, was sound asleep.
 
Dick awoke far in the night and stirred in his bed of leaves. But the movement caused him a little pain, and he wondered dimly, because he had not yet fully come through the gates of sleep, and he did not remember where he was or what had happened. A tiny shaft of pale light fell on his forehead, and he looked up through pine branches. It was the moon that sent the beam down upon him, but he could see nothing else. He stirred again and the little pain returned. Then all of it came back to him.
 
Dick reached out his hand and touched Albert. His brother was sleeping soundly, and he was still warm, the coat having protected him. But Dick was cold, despite the pines, the rocks, and the leaves. It was the cold that had caused the slight pain in his joints when he moved, but he rose softly lest he wake Albert, and slipped outside, standing in a clear space between the pines.
 
The late moon was of uncommon brilliancy. It seemed a molten mass of burnished silver, and its light fell over forest and valley, range and peak. The trees on the slopes stood out like lacework, but far down in the valley the light seemed to shimmer like waves on a sea of silver mist. It was all inexpressibly cold, and of a loneliness that was uncanny. Nothing stirred, not a twig, not a blade of grass. It seemed to Dick that if even a leaf fell on the far side of the mountain he could hear it. It was a great, primeval world, voiceless and unpeopled, brooding in a dread and mystic silence.
 
Dick shivered. He had shivered often that night, but now the chill went to the marrow. It was the chill the first man must have felt when he was driven from the garden and faced the globe-girdling forest. He came back to the rock covert and leaned over until he could hear his brother breathing beneath the pine boughs. Then he felt the surge of relief, of companionship—after all, he was not alone in the wilderness!—and returned to the clear space between the pines. There he walked up and down briskly, swinging his arms, exercising all his limbs, until the circulation was fully restored and he was warm again.
 
Dick felt the immensity of the problem that lay before him—one that he alone must solve if it were to be solved at all. He and Albert had escaped the massacre, but how were they to live in that wilderness of mountains? It was not alone the question of food. How were they to save themselves from death by exposure? Those twinges in his knees had been warning signs. Oddly enough, his mind now fastened upon one thing. He was longing for the lost buffalo robe, his first great prize. It had been so large and so warm, and the fur was so soft. It would cover both Albert and himself, and keep them warm on the coldest night. If they only had it now! He thought more of that robe just then than he did of the food that they would need in the morning. Cast forth upon a primeval world, this first want occupied his mind to the exclusion of all others.
 
He returned to the rocky alcove presently, and lay down again. He was too young and too healthy to remain awake long, despite the full measure of their situation, and soon he slept soundly once more. He was first to awake in the morning, and the beam that struck upon his forehead was golden instead of silver. It was warm, too, and cheerful, and as Dick parted the branches and looked out, he saw that the sun was riding high. It had been daylight a full three hours at least, but it did not matter. Time was perhaps the only commodity of which he and Albert now had enough and to spare.
 
He took his coat off Albert and put it on himself, lest Albert might suspect, and then began to sing purposely, with loudness and levity, an old farm rhyme that had been familiar to the boys of his vicinity:
 
"Wake up, Jake, the day is breaking.
The old cow died, her tail shaking."
 
Albert sat up, rubbed his eyes, and stared at Dick and the wilderness.
 
"Now look at him!" cried Dick. "He thinks he's been called too early. He thinks he'd like to sleep eight or ten hours longer! Get up, little boy! Yes, it's Christmas morning! Come and see what good old Santa has put in your stocking!"
 
Albert yawned again and laughed. Really, Dick was such a cheerful, funny fellow that he always kept one in good spirits. Good old Dick!
 
"Old Santa filled our stockings, all right," continued Dick, "but he was so busy cramming 'em full of great forests and magnificent scenery that he forgot to leave any breakfast for us, and I'm afraid we'll have to hustle for it."
 
They started down the mountain slope, and presently they came to a swift little brook, in which they bathed their faces, removing, at the same time, fragments of twigs and dried leaves from their hair.
 
"That was fine and refreshing," said Dick, "but it doesn't fill my stomach. Al, I could bite a tenpenny nail in half and digest both pieces, too."
 
"I don't care for nails," said Albert, "but I think I could gnaw down a good-sized sapling. Hold me, Dick, or I'll be devouring a pine tree."
 
Both laughed, and put as good a face on it as they could, but they were frightfully hungry, nevertheless. But they had grown up on farms, and they knew that the woods must contain food of some kind or other. They began a search, and after a while they found wild plums, now ripe, which they ate freely. They then felt stronger and better, but, after all, it was a light diet and they must obtain food of more sustenance.
 
"There are deer, of course, in this valley," said Dick, fingering his rifle, "and sooner or later we'll get a shot at one of them, but it may be days, and—Al—I've got another plan."
 
"What is it?"
 
"You know, Al, that I can travel pretty fast anywhere. Now those Sioux, after cutting down the train and wiping out all the people, would naturally go away. They'd load themselves up with spoil and scoot. But a lot, scattered here and there, would be left behind. Some of the teams would run away in all the shooting and shouting. And, Al, you and I need those things! We must have them if we are going to live, and we both want to live!"
 
"Do you mean, Dick, that you're going back down there in that awful pass?"
 
"That's just about what I had on my mind," replied Dick cheerfully; "and now I've got it off, I feel better."
 
"But you can never get back alive, Dick!" exclaimed Albert, his eyes widening in horror at the memory of what they had seen and heard the night before.
 
"Get back alive? Why, of course I will," responded Dick. "And I'll do more than that, too. You'll see me come galloping up the mountain, bearing hogsheads and barrels of provisions. But, seriously, Al, it must be done. If I don't go, we'll starve to death."
 
"Then I'm going, too."
 
"No, Al, old boy, you're not strong enough just yet, though you will be soon. There are certainly no Sioux in this little valley, and it would be well if you were to go back up the slope and stay in the pine shelter. It's likely that I'll be gone nearly all day, but don't be worried. You'll have one of the rifles with you, and you know how to use it."
 
Albert had a clear and penetrating mind, and he saw the truth of Dick's words. They went back up the slope, where he crept within the pine shelter and lay down on the leaves, while Dick went alone on his mission.