The thin sheath of ice did not last long. On the second day the sun came out and melted it in an hour. Then a warm wind blew and in a few more hours the earth was dry. On the third day Albert took his repeating rifle from the hooks on the wall and calmly announced that he was going hunting.
 
"All right," said Dick; "and as I feel lazy I'll keep house until you come back. Don't get chewed up by a grizzly bear."
 
Dick sat down in the doorway of the cabin and watched his brother striding off down the valley, gun on shoulder, figure very erect. Dick smiled; but it was a smile of pride, not derision.
 
"Good old Al! He'll do!" he murmured.
 
Albert followed the brook into the larger valley and then went down by the side of the lake. Though a skillful shot, he was not yet a good hunter, but he knew that one must make a beginning and he wanted to learn through his own mistakes.
 
He had an idea that game could be found most easily in the forest that ran down the mountain side to the lake, and he was thinking most particularly just then of elk. He had become familiar with the loud, whistling sound, and he listened for it now but did not hear it.
 
He passed the spot at which Dick had killed the big cow elk and continued northward among the trees that covered the slopes and flat land between the mountain and the lake. This area broadened as he proceeded, and, although the forest was leafless now, it was so dense and there was such a large proportion of evergreens, cedars, and pines that Albert could not see very far ahead. He crossed several brooks pouring down from the peaks. All were in flood, and once or twice it was all that he could do with a flying leap to clear them, but he went on, undiscouraged, keeping a sharp watch for that which he was hunting.
 
Albert did not know much about big game, but he remembered hearing Dick say that elk and mule deer would be likely to come into the valley for shelter at the approach of winter, and he was hopeful that he might have the luck to encounter a whole herd of the big elk. Then, indeed, he would prove that he was an equal partner with Dick in the work as well as the reward. He wished to give the proof at once.
 
He had not been so far up the north end of the valley before, and he noticed that here was quite an expanse of flat country on either side of the lake. But the mountains all around the valley were so high that it seemed to Albert that deer and other wild animals might find food as well as shelter throughout the winter. Hence he was quite confident, despite his poor luck so far, that he should find big game soon, and his hunting fever increased. He had never shot anything bigger than a rabbit, but Albert was an impressionable boy, and his imagination at once leaped over the gulf from a rabbit to a grizzly bear.
 
He had the lake, an immense and beautiful blue mirror, on his right and the mountains on his left, but the space between was now nearly two miles in width, sown thickly in spots with pine and cedar, ash and aspen, and in other places quite open. In the latter the grass was green despite the lateness of the season, and Albert surmised that good grazing could be found there all through the winter, even under the snow. Game must be plentiful there, too.
 
The way dropped down a little into a sheltered depression, and Albert heard a grunt and a great puffing breath. A huge dark animal that had been lying among some dwarf pines shuffled to its feet and Albert's heart slipped right up into his throat. Here was his grizzly, and he certainly was a monster! Every nerve in Albert was tingling, and instinct bade him run. Will had a hard time of it for a few moments, struggling with instinct, but will conquered, and, standing his ground, Albert fired a bullet from his repeater at the great dark mass.
 
The animal emitted his puffing roar again and rushed, head down, but blindly. Then Albert saw that he had roused not a grizzly bear but an enormous bull buffalo, a shaggy, fierce old fellow who would not eat him, but who might gore or trample him to death. His aspect was so terrible that will again came near going down before instinct, but Albert did not run. Instead, he leaped aside, and, as the buffalo rushed past, he fired another bullet from his repeater into his body just back of the fore legs.
 
The animal staggered, and Albert staggered, too, from excitement and nervousness, but he remembered to take aim and fire again and again with his heavy repeater. In his heat and haste he did not hear a shout behind him, but he did see the great bull stagger, then reel and fall on his side, after which he lay quite still.
 
Albert stood, rifle in hand, trembling and incredulous. Could it be he who had slain the mightiest buffalo that ever trod the earth? The bull seemed to his distended eyes and flushed brain to weigh ten tons at least, and to dwarf the biggest elephant. He raised his hand to his forehead and then sat down beside his trophy, overcome with weakness.
 
"Well, now, you have done it, young one! I thought I'd get a finger in this pie, but I came up too late! Say, young fellow, what's your name? Is it Daniel Boone or Davy Crockett?"
 
It was Dick who had followed in an apparently casual manner. He had rushed to his brother's rescue when he saw the bull charging, but he had arrived too late—and he was glad of it; the triumph was wholly Albert's.
 
Albert, recovering from his weakness, looked at Dick, looked at the buffalo, and then looked back at Dick. All three looks were as full of triumph, glory, and pride as any boy's look could be.
 
"He's as big as a mountain, isn't he, Dick?" he said.
 
"Well, not quite that," replied Dick gravely. "A good-sized hill would be a better comparison."
 
The buffalo certainly was a monster, and the two boys examined him critically. Dick was of the opinion that he belonged to the species known as the wood bison, which is not numerous among the mountains, but which is larger than the ordinary buffalo of the plains. The divergence of type, however, is very slight.
 
"He must have been an outlaw," said Dick; "a vicious old bull compelled to wander alone because of his bad manners. Still, it's likely that he's not the only buffalo in our valley."
 
"Can we eat him?" asked Albert.
 
"That's a question. He's sure to be tough, but I remember how we used to make steak tender at home by beating it before it was cooked. We might serve a thousand pounds or two of this bull in that manner. Besides, we want that robe."
 
The robe was magnificent, and both boys felt that it would prove useful. Dick had gained some experience from his own buffalo hunt on the plains, and they began work at once with their sharp hunting knives. It was no light task to take the skin, and the beast was so heavy that they could not get it entirely free until they partly chopped up the body with an ax that Dick brought from the cabin. Then it made a roll of great weight, but Dick spread it on the roof of their home to cure. They also cut out great sections of the buffalo, which they put in the same place for drying and jerking.
 
While they were engaged at this task, Albert saw a pair of fiery eyes regarding them from the undergrowth.
 
"See, Dick," he said, "what is that?"
 
Dick saw the eyes, the lean ugly body behind it, and he shuddered. He knew. It was the timber wolf, largest and fiercest of the species, brother to him whom he had seen prowling about the ruined wagon train. The brute called up painful memories, and, seizing his rifle, he fired at a spot midway between the red eyes. The wolf uttered a howl, leaped high in the air, and fell dead, lying without motion, stretched on his side.
 
"I didn't like the way he looked at us," explained Dick.
 
A horrible growling and snapping came from the bushes presently.
 
"What's that?" asked Albert.
 
"It's only Mr. Timber Wolf's brethren eating up Mr. Timber Wolf, now that he is no longer of any use to himself."
 
Albert shuddered, too.
 
It was nightfall when they took away the last of the buffalo for which they cared, and as they departed they heard in the twilight the patter of light feet.
 
"It's the timber wolves rushing for what we've left," said Dick. "Those are big and fierce brutes, and you and I, Al, must never go out without a rifle or a revolver. You can't tell what they'll try, especially in the winter."
 
The entire roof of the cabin was covered the next day with the buffalo robe and the drying meat, and birds of prey began to hover above it. Albert constituted himself watchman, and, armed with a long stick, took his place on the roof, where he spent the day.
 
Dick shouldered one of the shotguns and went down to the lake. There he shot several fine teal, and in one of the grassy glades near it he roused up prairie hen. Being a fine shot, he secured four of these, and returned to the cabin with his acceptable spoil.
 
They had now such a great supply of stores and equipment that their place was crowded and they scarcely had room for sleeping on the floor.
 
"What we need," said Dick, "is an annex, a place that can be used for a storehouse only, and this valley, which has been so kind to us, ought to continue being kind and furnish it."
 
The valley did furnish the annex, and it was Albert who found it. He discovered a little further up the cleft an enormous oak, old and decayed. The tree was at lease seven feet through, and the hollow itself was fully five feet in diameter, with a height of perhaps fourteen feet. It was very rough inside with sharp projections in every direction which had kept any large animal from making his den there, but Albert knew at once that the needed place had been found. Full of enthusiasm he ran for Dick, who came instantly to see.
 
"Fine," said Dick approvingly. "We'll call it the 'Annex,' sure enough, and we'll get to work right away with our axes."
 
They cut out all the splinters and other projections, smoothing off the round walls and the floor, and they also extended the hollow overhead somewhat.
 
"This is to be a two-story annex," said Dick. "We need lots of room."
 
High up they ran small poles across, fixing them firmly in the tree on either side, and lower down they planted many wooden pegs and hooks on which they might hang various articles.
 
"Everything will keep dry in here," said Albert. "I would not mind sleeping in the Annex, but when the door is closed there won't be a particle of air."
 
It was the "door" that gave them the greatest trouble. The opening by which they entered the hollow was about four feet high and a foot and a half across, and both boys looked at it a long time before they could see a way to solve the puzzle.
 
"That door has to be strong enough to keep everything out," said Dick. "We mean to keep most of our meat supply in there, and that, of course, will draw wild animals, little and big; it's the big ones we've got to guard against."
 
After strenuous thinking, they smoothed off all the sides of the opening in order that a flat surface might fit perfectly against them. Then Dick cut down a small oak, and split out several boards—not a difficult task for him, as he had often helped to make boards in Illinois. The boards were laid together the width of the opening and were held in place by cross pieces fastened with wooden pegs. Among their stores were two augers and two gimlets, and they were veritable godsends; they enabled the boys to make use of pegs and to save the few nails that they had for other and greater emergencies.
 
The door was made, and now came the task to "hang" it. "Hang" was merely a metaphorical word, as they fitted it into place instead. The wood all around the opening was about a foot thick, and they cut it out somewhat after the fashion of the lintels of a doorway. Then they fitted in the door, which rested securely in its grooves, but they knew that the claws of a grizzly bear or mountain lion might scratch it out, and they intended to make it secure against any such mischance.
 
With the aid of hatchet and auger they put three wooden hooks on either side of the doorway, exactly like those that defend the door of a frontier cabin, and into these they dropped three stout bars. It was true that the bars were on the outside, but no wild animal would have the intelligence enough to pry up those three bars and scratch the door out of place. Moreover, it could not happen by accident. It took them three laborious days to make and fit this door, but when the task was done they contemplated it with just pride.
 
"I call that about the finest piece of carpenter's work ever done in these mountains," said Albert in tones suffused with satisfaction.
 
"Of course," said Dick. "Why shouldn't it be, when the best carpenters in the world did the job?"
 
The two laughed, but their pride was real and no jest. It was late in the afternoon when they finished this task, and on the way to the cabin Albert suddenly turned white and reeled. Dick caught him, but he remained faint for sometime. He had overtasked himself, and when they reached the cabin Dick made him lie down on the great buffalo robe while he cooked supper. But, contrary to his former habit, Albert revived rapidly. The color returned to his face and he sprang up presently, saying that he was hungry enough to eat a whole elk. Dick felt a might sense of relief. Albert in his zeal had merely overexerted himself. It was not any relapse. "Here's the elk steak and you can eat ten pounds of it if you want it," he said.
 
They began early the next morning to move supplies to the Annex. High up in the hollow they hung great quantities of dried meat of buffalo, elk, and mule deer. They also stored there several elk and mule deer skins, two wolf skins, and other supplies that they thought they would not need for a while. But in the main it was what they called a smokehouse, as it was universally known in the Mississippi Valley, their former home—that is, a place for keeping meat cured or to be cured.
 
This task filled the entire day, and when the door was securely fastened in place they returned to the cabin. After supper Dick opened the window, from which they could see the Annex, as they had cut away a quantity of the intervening bushes. Albert meanwhile put out the last coals of the fire. Then he joined Dick at the window. Both had an idea that they were going to see something interesting.
 
The valley filled with darkness, but the moon came out, and, growing used to the darkness, they could see the Annex fairly well.
 
Dick wet his finger and held it up.
 
"The wind is blowing from the Annex toward us," he said.
 
"That's good," said Albert, nodding.
 
They watched for a long time, hearing only the dry rustling of the light wind among the bare boughs, but at last Dick softly pushed his shoulder against Albert's. Albert nodded again, with comprehension. A small dark animal came into the open space around the Annex. The boys had difficulty in tracing his outlines at first, but once they had them fixed, they followed his movements with ease. He advanced furtively, stopping at intervals evidently both to listen and look. Some other of his kind, or not of his kind, might be on the same quest and it was his business to know.
 
"Is it a fox?" whispered Albert.
 
"I think not," replied Dick in the same tone. "It must be a wolverine. He scents the good things in the Annex and he wants, oh, how he wants, the taste of them!"
 
The little dark animal, after delicate maneuvering, came close up to the tree, and they saw him push his nose against the cold bark.
 
"I know just how he feels," whispered Albert with some sympathy.
"It's all there, but he must know the quest is hopeless."
 
The little animal went all around the tree nosing the cold bark, and then stopped again at the side of the door.
 
"No use, sir," whispered Albert. "That door won't open just because you're hungry."
 
The little animal suddenly cocked up his head and darted swiftly away into the shadows. But another and somewhat larger beast came creeping into the open, advancing with caution toward the Annex.
 
"Aha!" whispered Dick. "Little fellow displaced by a bigger one. That must be a wild cat."
 
The wild cat went through the same performance. He nosed eagerly at the door, circled the tree two or three times, but always came back to the place where that tempting, well-nigh irresistible odor assailed him. The boys heard a low growl and the scratching of sharp claws on the door.
 
"Now he's swearing and fighting," whispered Albert, "but it will do him no good. Save your throat and your claws, old fellow."
 
"Look, he's gone!" whispered Dick.
 
The wild cat suddenly tucked his tail between his legs and fled from the opening so swiftly that they could scarcely see him go.
 
"And here comes his successor," whispered Albert. "I suppose, Dick, we might call this an arithmetical or geometrical progression."
 
An enormous timber wolf stalked into the clear space. He bore no resemblance to the mean, sneaking little coyote of the prairie. As he stood upright his white teeth could be seen, and there was the slaver of hunger on his lips. He, too, was restive, watchful, and suspicious, but it did not seem to either Dick or Albert that his movements betokened fear. There was strength in his long, lean body, and ferocity in his little red eyes.
 
"What a hideous brute!" whispered Albert, shuddering.
 
"And as wicked as he is ugly," replied Dick. "I hate the sight of these timber wolves. I don't wonder that the wild cat made himself scarce so quickly."
 
"And he's surely hungry!" said Albert. "See how he stretches out his head toward our Annex, as if he would devour everything inside it!"
 
Albert was right. The big wolf was hungry, hungry through and through, and the odor that came from the tree was exquisite and permeating; it was a mingled odor of many things and everything was good. He had never before known a tree to give forth such a delightful aroma and he thrilled in every wolfish fiber as it tickled his nostrils.
 
He approached the tree with all the caution of his cautious and crafty race, and, as he laid his nose upon the bark, that mingled aroma of many things good grew so keen and powerful that he came as near as a big wolf can to fainting with delight. He pushed at the places where the door fitted into the tree, but nothing yielded. Those keen and powerful odors that penetrated delightfully to every marrow of him were still there, but he could not reach their source. A certain disappointment, a vague fear of failure mingled with his anticipation, and as the wolverine and the wild cat had done, he moved uneasily around the tree, scratching at the bark, and now and then biting it with teeth that were very long and cruel.
 
His troubled circuit brought him back to the door, where the aroma was finest and strongest. There he tore at the lowest bar with tooth and claw, but it did not move. He had the aroma and nothing more, and no big, strong wolf can live on odors only. The vague disappointment grew into a positive rage. He felt instinctively that he could not reach the good things that the wonderful tree held within itself, but he persisted. He bent his back, uttered a growl of wrath just as a man swears, and fell to again with tooth and claw.
 
"If I didn't know that door was so very strong, I'd be afraid he'd get it," whispered Albert.
 
"Never fear," Dick whispered back with confidence.
 
The big wolf suddenly paused in his effort. Tooth and claw were still, and he crouched hard against the tree, as if he would have his body to blend with its shadow. A new odor had come to his nostrils. It did not come from the tree. Nor was it pleasant. Instead, it told him of something hostile and powerful. He was big and strong himself, but this that came was bigger and stronger. The growl that had risen in his throat stopped at his teeth. A chill ran down his backbone and the hair upon it stood up. The great wolf was afraid, and he knew he was afraid.
 
"Look!" whispered Albert in rising excitement. "The wolf, too, is stealing away! He is scared by something!"
 
"And good cause he has to be scared," said Dick. "See what's coming!"
 
A great tawny beast stood for a moment at the edge of the clearing. He was crouched low against the ground, but his body was long and powerful, with massive shoulders and fore arms. His eyes were yellow in the moonlight, and they stared straight at the Annex. The big wolf took one hasty frightened look and then fled silently in the other direction. He knew now that the treasures of the Annex were not for him.
 
"It's a cougar," whispered Dick, "and it must be the king of them all. Did you ever see such a whopper?"
 
The cougar came farther into the clearing. He was of great size, but he was a cat—a huge cat, but a cat, nevertheless—and like a cat he acted. He dragged his body along the earth, and his eyes, now yellow, now green, in the moonlight, were swung suspiciously from side to side. He felt all that the wolf had felt, but he was even more cunning and his approach was slower. It was his habit to spring when close enough, but he saw nothing to spring at except a tree trunk, and so he still crept forward on noiseless pads.
 
"Now, what will Mr. Cougar do?" asked Albert.
 
"Just what the others have done," replied Dick. "He will scratch and bite harder because he is bigger and stronger, but we've fixed our Annex for just such attacks. It will keep him out."
 
Dick was right. The cougar or mountain lion behaved exactly as the others had done. He tore at the door, then he circled the tree two or three times, hunting in vain for an opening. Every vein in him was swollen with rage, and the yellowish-green eyes flared with anger.
 
"He'd be an ugly creature to meet just now," whispered Dick.
"He's so mad that I believe he'd attack an elephant."
 
"He's certainly in no good humor," replied Dick. "But look, Al! See his tail drop between his legs! Now what under the moon is about to happen?"
 
Albert, surcharged with interest and excitement, stared as Dick was staring. The mighty cat seemed suddenly to crumple up. His frame shrank, his head was drawn in, he sank lower to the earth, as if he would burrow into it, but he uttered no sound whatever. He was to both the boys a symbol of fear.
 
"What a change! What does it mean?" whispered Albert.
 
"It must mean," replied Dick, "that he, too, has a master and that master is coming."
 
The cougar suddenly bunched himself up and there was a flash of tawny fur as he shot through the air. A second leap and the trees closed over his frightened figure. Albert believed that he would not stop running for an hour.
 
Into the opening, mighty and fearless, shambled a monstrous beast. He had a square head, a long, immense body, and the claws of his great feet were hooked, many inches in length, and as sharp and hard as if made of steel. The figure of the beast stood for power and unbounded strength, and his movements indicated overwhelming confidence. There was nothing for him to fear. He had never seen any living creature that could do him harm. It was a gigantic grizzly bear.
 
Albert, despite himself, as he looked at the terrible brute, felt fear. It was there, unconfined, and a single blow of its paw could sweep the strongest man out of existence.
 
"I'm glad I'm in this cabin and that this cabin is strong," he whispered tremulously.
 
"So am I," said Dick, and his own whisper was a little shaky. "It's one thing to see a grizzly in a cage, and another to see him out here in the dark in these wild mountains. And that fellow must weigh at least a thousand pounds."
 
King Bruin shambled boldly across the opening to the Annex. Why should he be careful? There might be other animals among the bushes and trees watching him, but they were weak, timid things, and they would run from his shadow. In the wan moonlight, which distorted and exaggerated, his huge bulk seemed to the two boys to grow to twice its size. When he reached the tree he reared up against it, growled in a manner that made the blood of the boys run cold, and began to tear with teeth and claws of hooked steel. The bark and splinters flew, and, for a moment, Dick was fearful lest he should force the door to their treasure. But it was only for a moment; not even a grizzly could break or tear his way through such a thickness of oak.
 
"Nothing can displace him," whispered Albert. "He's the real king."
 
"He's not the king," replied Dick, "and something can displace him."
 
"What do you mean?" asked Albert with incredulity.
 
"No beast is king. It's man, and man is here. I'm going to have a shot at that monster who is trying to rob us. We can reach him from here with a bullet. You take aim, too, Al."
 
They opened the window a little wider, being careful to make no noise, and aimed their rifles at the bear, who was still tearing at the tree in his rage.
 
"Try to hit him in the heart, Al," whispered Dick, "and I'll try to do the same. I'll count three in a whisper, and at the 'three' we'll fire together."
 
The hands of both boys as they leveled their weapons were trembling, not with fear, but from sheer nervousness. The bear, meanwhile, had taken no notice and was still striving to reach the hidden treasures. Like the others, he had made the circuit of the Annex more than once, but now he was reared up again at the door, pulling at it with mighty tooth and claw. It seemed to both as they looked down the barrels of their rifles and chose the vulnerable spot that, monstrous and misshapen, he was constantly growing in size, so powerful was the effect of the moonlight and their imagination. But it was terrible fact to them.
 
They could see him with great distinctness, and so silent was the valley otherwise that they could hear the sound of his claws ripping across the bark. He was like some gigantic survival of another age. Dick waited until both his brother and himself grew steadier.
 
"Now don't miss, Albert," he said.
 
He counted "One, two, three," slowly, and at the "three!" the report of the two rifles came as one. They saw the great bear drop down from the tree, they heard an indescribable roar of pain and rage, and then they saw his huge bulk rushing down upon them. Dick fired three times and Albert twice, but the bear still came, and then Dick slammed the window shut and fastened it just as the full weight of the bear was hurled against the cabin.
 
Neither boy ever concealed from himself the fact that he was in a panic for a few moments. Their bullets seemed to have had no effect upon the huge grizzly, who was growling ferociously and tearing at the logs of the cabin. Glad they were that those logs were so stout and thick, and they stood there a little while in the darkness, their blood chilling at the sounds outside. Presently the roaring and tearing ceased and there was the sound of a fall. It was so dark in the cabin that the brothers could not see the faces of each other, but Dick whispered:
 
"Albert, I believe we've killed him, after all."
 
Albert said nothing and they waited a full ten minutes. No sound whatever came to their ears. Then Dick opened the window an inch or two and peeped out. The great bear lay upon his side quite still, and Dick uttered a cry of joy.
 
"We've killed him, Al! we've killed him!" he cried.
 
"Are you sure?" asked Albert.
 
"Quite sure. He does not stir in the slightest."
 
They opened the door and went out. The great grizzly was really dead. Their bullets had gone true, but his vitality was so enormous that he had been able to rush upon the cabin and tear at it in his rage until he fell dead. Both boys looked at him with admiration and awe; even dead, he was terrifying in every respect.
 
"I don't wonder that the cougar, big and strong as he was, slunk away in terror when he saw old Ephraim coming," said Dick.
 
"We must have his skin to put with our two buffalo robes," said
Albert.
 
"And we must take it to-night," said Dick, "or the wolves will be here while we sleep."
 
They had acquired some skill in the art of removing furs and pelts, but it took them hours to strip the coat from the big grizzly. Then, as in the case of the buffalo, they cut away some portions of the meat that they thought might prove tender. They put the hide upon the roof to dry, and, their work over, they went to sleep behind a door securely fastened.
 
Dick was awakened once by what he thought was a sound of growling and fighting outside, but he was so sleepy that it made no impression upon him. They did not awake fully until nearly noon, and when they went forth they found that nothing was left of the great bear but his skeleton.
 
"The timber wolves have been busy," said Dick.