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