THE BRAVE SWISS BOY.

IV.—A TERRIBLE FALL.

For a moment father and son stood silent on the brink of the crevasse, looking after the chamois.

"We can't get across here, father," said Walter, in a whisper; "let us try and find some other way."

"We can't find a better spot than this," replied his father, examining his gun.

"But what's the use of shooting him? What's the good of a dead chamois if we can't get him?"

"When he's once dead, boy, we'll soon find some means of getting at him," was the answer. "A board laid over the crevasse will be an easy way of recovering the venison."

"But we haven't got a board, father."

"That we'll see about. Just stand on one side, Watty."

The hunter cocked his gun, took aim for a moment, and was going to fire, when he turned suddenly pale, and dropped his arm.

"What's the matter, father? Do you feel ill?" inquired Walter, with anxiety.

"No," replied the huntsman; "but it seemed as if the ice was giving way just as I was going to fire. But it can't be," he continued, stamping his foot; "the ice is solid and firm enough."

"Let us go home, father," implored Walter. "I feel a presentiment that something will happen. Come home now, and we can try for the buck to-morrow."

But the old mountaineer had in the mean time become self-possessed again, and again raised his gun to fire. Just as he pulled the trigger, however, his foot slipped, and with an exclamation of horror, Walter saw him carried rapidly toward the rift in the ice, and suddenly disappear. With the recoil of the gun the hunter had lost his balance on the slippery ice, and at the same moment that his shot struck the chamois, he was hurled into the "rift."

"Father! father! father!" screamed Walter, throwing himself on the ice, horror-stricken, and peering wildly down the crevasse. "Father, speak!"

All was silent. Only a slight trickling, as if from some subterranean stream, reached his ear.

For several minutes the youth lay at the edge of the chasm, paralyzed with terror. When he recovered his consciousness, a feeling of alarm and distress overwhelmed him. He wept, and wrung his hands bitterly.

"Father!" he cried again into the abyss that yawned beneath him—"father, speak to me, for God's sake!"

A sudden thrill passed through his frame as a low murmur came up from the icy grave. He strained his ears to listen to the broken words. "I am alive, Watty," was the reply of the unfortunate man; "but my ankle is out of joint, and one of my arms broken. I shall never see the light of day again."

A cry of mingled joy and agony burst from Walter's lips.

"Don't be afraid, father," he exclaimed. "You shall be rescued, with God's help. Have you got your bag with you?"

"Yes, but my bottle is broken."

"Well, then, take mine. I'll lower it down with a cord. Have you got it?"

"Yes," was feebly answered. "I can hold out now for a while, unless the cold strikes me."

"Courage, father, till I run down to the village, and get the neighbors and shepherds to come with ropes and poles. Try to hold out for a couple of hours, and with the help of God you shall be saved."

"Ay, ay, dear boy," was the faint reply; "I will try to be patient till you come back." And with a godspeed Walter hurried off to rouse the neighbors to the rescue.

It was a dangerous journey that the brave boy undertook for his father's rescue; but courage, and the agility which is acquired by those who are accustomed to the mountains from childhood, enabled him to reach the valley in a wonderfully short time. Pale as death, with hands bleeding, and clothes torn to shreds, he rushed to the inn, which was the nearest spot where help could be found. His appearance naturally created consternation, and in answer to the numerous questions addressed to him he related in a few breathless words the dreadful accident which had befallen his father. A score of stalwart hands were instantly ready to rescue the unfortunate man from his dreadful position; the landlord of the inn ordered ropes, poles, and ladders to be got in readiness, and meanwhile pressed refreshment on the well-nigh exhausted youth. Moments were precious, but ere long the party reached the scene of the disaster, when Walter, leaning over the edge of the cleft, cried to his father, and was answered.

"Yes, I'm still alive," replied the mountaineer, in feeble tones; "but I am almost frozen to death, and in dreadful pain. Make haste and help me, if you can, for I'm losing my senses."

"Down with the rope!" shouted the landlord, who had himself come up with the party.—"Look out, Hirzel! Place the loop over your shoulders and under your arms, and try to draw it tight. There are plenty of strong arms here that will soon get you up."

The rope having been made fast to an iron stanchion driven into the ice, the looped end was lowered away into the chasm; but no sign was made by Hirzel that he had obeyed the directions, and fastened it round his body.

"Father, why don't you make haste?" exclaimed Walter in agony.

But there was no answer.

"He must have fainted at the last moment," said the landlord; "and if so, then may God have mercy upon him! for not a living creature could venture such a depth."

"LET ME GO!" HE CRIED. "I MUST SAVE MY FATHER!"

"I will venture it!" exclaimed Walter, seizing the rope. But twenty hands held him back. "Let me go!" he cried. "I must save my father!" and breaking loose with a sudden effort from the men who surrounded him, the courageous youth seized the rope and disappeared in sight of his horror-stricken companions.

A few terrible moments passed, when a shout from below was suddenly heard, and the cry, "All right! pull away, friends!" sent a thrill of joy through every heart.

"Pull steadily, my men," cried the good landlord; "but pull as if your own lives depended on it. I can see them now!" exclaimed he, gazing into the gloomy abyss. "Hirzel seems to have fainted, just as I thought, but Watty has fastened the rope round him securely. Pull away! they will be at the top in a few seconds."

Encouraged by success, the men redoubled their efforts, and had soon the satisfaction of landing father and son safely on the ice.

A rough kind of stretcher having been hastily made of poles and ropes, the wounded hunter was laid upon it and carried home; and as there was no lack of stout hearts and sure feet, the journey was accomplished without accident. After setting his broken limbs and binding up his wounds, the doctor, who had been speedily called in, expressed the hope that Hirzel's life would be saved, but he doubted very much if he would ever be able to climb the mountains for chamois again. Walter was thankful to find that his father's life was in no danger, and had himself so far recovered his equanimity as to be able to relate how he had rescued him from his icy grave, and how he found that the rope, instead of having reached the wounded man, had actually rested on a ledge ten feet above the place where he lay. Walter, who felt devoutly thankful that his efforts had been so successful, was overwhelmed with praises for his heroism.

Nor was the chamois forgotten. The generous landlord had it brought down to the inn from the spot where it had fallen, and sent an ample equivalent to Hirzel's cottage.

[to be continued.]


THE PROFESSOR ON TWINKLING.

Jack was delighted with the idea. Gus differed from him entirely. Joe and I, being girls, pronounced it—horrid.

"Papa wants us to, you know," said May, who always sets us straight.

Jack, who had recently joined one of the college societies, moved that the Professor be cordially supported. "His lecture last week was exceedingly entertaining," he argued. "That he should be so good as to come here and talk to us about his wonderful science in a pleasant familiar way, simply because he's papa's old friend, shows the interest he takes in the family."

"Do hush, Jack."

"My dear sister, I can not. What the Professor has to tell us about the heavenly bodies—"

"I hate the heavenly bodies," growls Gus.

"Is it jealousy, Augustus, because they are allowed to stay out late nights, while you are not?"

"Whatever it is, I agree with him," puts in Joe, who always stands by Gus. "I hate astronomy too."

"Feeling as I do, Josephine, that your knowledge in the science is confined to 'Twinkle, twinkle, little star,' and the fact that 'the moon is made of green cheese,' I am surprised at you."

"What makes them twinkle?" asked May.

The Professor heard this, for he was just coming up stairs.

"What makes them twinkle, May?" and the Professor seated himself in an easy-chair, as if ready to talk.

"I don't know, Sir. Won't you please tell us?"

"Pooh, May, don't bother the Professor with such juvenile questions. He'll think he's intrusted with the charge of the third form in an infant school."

"But," persisted May, "I would like very much to know, and I don't believe you can tell, if you have been to college. Now there!"

Jack was somewhat nonplussed at this, but after a moment's hesitation said, "Well, anyhow, the books I studied never told anything about the stars twinkling, and I don't believe they do twinkle. It's nothing but a baby notion."

All eyes are now intently fixed upon the Professor, who is expected first to settle the fact, and then to account for it.

"You, Jack, who have been to college," he began, "know that all vision or sight is produced by rays falling upon the eyes. These rays may be broken or turned from their natural course—the word astronomers use is refracted. Now the stars are so far away from us that through the largest telescope they are still only points of light. As the rays come down through space there is nothing to break or refract them, but when they reach our atmosphere, there is the tremulous agitation of the air and ascending vapors. By these the rays coming from the tiny points are at intervals turned aside from the narrow space of the pupil of the eye. When the eye is assisted with the wide opening of the object-glass of a telescope no such thing happens. So Jack is right; the stars don't twinkle. When viewed through a telescope, they are found to shine with a steady brightness, and hence the motion is only in appearance. Recent astronomers have little to say about it; but it is due, doubtless, as Sir Isaac Newton explains in his celebrated Principia, to the ascending vapors and tremulous movements of the atmosphere. You have seen how the heated air or gas rising from a stove will sometimes make things behind it tremble and dance. Now if a small candle were burning on the other side of the ascending vapor, its flame, though really steady, would seem to flicker."

"Then, Sir, the stars, being so very far off, appear so very little, and the rays of light they send are disturbed by atmospheric vapor, and thus to the naked eye they twinkle."

"Yes," said the Professor. "The sun and moon, as you know, present broad disks, with light radiating from every point—"

"Please, Professor," interrupted May, "tell us what a 'disk' is. Jack's big words are dreadful to understand; and this, although a little one, seems just as bad."

"I don't wonder I puzzled you, May. We use the word disk for the face or surface of a heavenly body which appears to have some size. You may always stop me when I use a word you don't understand; but when I have once told you, I shall want you to remember; for we can not know much about science unless we learn some of the hard words. I was saying that the sun and moon present broad disks, so that if some of the light is intercepted, the eye does not notice the loss. The same is true also of the planets, which appear large when they are magnified, but not of the stars, owing to their immense distances; and when the impurities in the atmosphere obscure or divert the narrow line of light they send to us, the eye perceives it at once. Some of the stars appear very brilliant through the large telescopes, but the light still seems to proceed from a single point. There are some four or five thousand stars that can be seen without a telescope."

THE GREAT EQUATORIAL, UNITED STATES NATIONAL OBSERVATORY.

"Why," interrupted Joe, "I thought there were more than anybody could count."

"So there are," replied the Professor, "but the number that can be distinctly perceived by the unassisted eye is found to be comparatively small when they are carefully looked after. On very clear nights the whole sky may seem to glisten when the eye is suddenly turned upward; and there are some portions of it where a confused light comes from a sort of star-cloud, which has received the name of 'Milky Way.' But the stars that can be seen separately are very easily counted. Some persons can see rather more than others, on account of their eye-sight being naturally better, or improved by use. A rough count of the number that could be seen through Herschel's famous telescope made it twenty thousand. The great telescopes more recently made would probably show as many as forty or fifty millions."

"I should think," said May, "that it would be awful tiresome to count so many things just alike, and that the man would often count the same one over and over without knowing it, and would never be sure that he had counted right."

"They are not all alike," said the Professor. "They differ greatly in brightness, and to some extent in color, and in other particulars. They have been divided according to their brilliancy into sixteen classes or magnitudes. The fifteen brightest stars are said to be of the first magnitude, the fifty next of the second, and so on to the sixth, which comprises the faintest stars visible to the unassisted eye. The brightest star of all visible in our latitude is the dogstar, which gives four times as much light as any other. In every age of the world there have been learned men interested enough in the stars to make catalogues of them, giving their magnitudes and their positions."

"I think they must have been very slow and stupid follows," said Gus, "or they would have found something better to do."

At this the Professor laughed.

"I think, Gus, you are hungry, and have your mind on mutton-chops. I shall not talk to you any more this morning; but, after lunch, if you will look in one of the great books in papa's library, which he will point out, you will find pictures of all the great telescopes in the world. The best one in our own country is that at the United States National Observatory at Washington. Without the aid of these wonderful instruments we should never have learned much about the stars."


THE HISTORY OF PHOTOGEN AND NYCTERIS.