Jacob Abbott

Rollo's Experiments

Published by Good Press, 2022
goodpress@okpublishing.info
EAN 4057664583192

Table of Contents


PRUNING.
THE GREAT BEETLE AND WEDGE.
THE LITTLE BEETLE AND WEDGE.
SPLITTING.
HOROLOGY.
JONAS’S DIAL.
THE BEE-HIVE.
JONAS’S MAGNET.
MAGNETISM.
INTELLECTUAL PHILOSOPHY.
OSCILLATIONS.

PRUNING.

Table of Contents

One afternoon, Rollo saw his father coming out into the garden, with a little saw and a knife, and a small pot of paint in his hands.

“Father,” said he, “are you going to prune your trees now?”

“Yes,” said his father.

“Then, shall I go and get my wheelbarrow?”

“Yes,” replied his father, again.

So Rollo ran off after his wheelbarrow. It had been arranged, between him and his father that morning, that they should work in the garden an hour or two in the afternoon, and that Rollo should pick up all the cuttings from the trees, and wheel them away, and then, when they were dry, make a bonfire with them.

Rollo found his wheelbarrow in its proper place, and trundled it along into the garden.

“Father,” said he, “what trees are you going to prune first?”

“O, I am going to begin at the back side of the garden, and prune them all, advancing regularly to the front.”

“What is the saw for?” said Rollo.

“To saw off the large branches, that I can’t cut off easily with a knife.”

“But I should not think you would want to saw off any large branches, for so you will lose all the apples that would grow on them next year.”

“Why, sometimes, the branches are dead, and then they would do no good, but only be in the way.”

“But do they do any hurt?” said Rollo.

“Why, they look badly.”

“But, I mean, would they do any actual hurt to the tree?”

“Why, I don’t know,” said his father; “perhaps they would not. At any rate, if I cut them off pretty close to the living part of the tree, the bark will then gradually extend out over the little stump that I leave, and finally cover it over, and take it all in, as it were.”

By this time, Rollo and his father had reached the back side of the garden, and his father showed him the place where he had cut off a limb the year before, and he saw how the fresh young bark had protruded itself all around it, and was spreading in towards the centre so as to cover it over. Rollo then saw that it was better that all old dead limbs should be cut off.

“That’s curious,” said Rollo.

“Yes, very curious,” said his father. “A tree will take in, and cover up, almost any thing that is fastened to the wood, in the same manner.”

“Will it?” said Rollo.

“Yes,” said his father. “If you drive a nail into a tree, the bark will, after a time, cover it over entirely. Sometimes people find things in old trees, which were put upon them when they were young.”

“How big things?” said Rollo.

“O, I don’t know exactly how big. The tree will make an effort to enclose any thing small or large. Only, if it is very large, it will take a great while to enclose it, and it might be so large that it never could enclose it.”

“Well, father, how large must it be so that the tree never could enclose it?”

“O, I don’t know, exactly. Once I saw a tree that was growing very near a rock. After a time it came in contact with it, and it grew and pressed against it, until the rock crowded into the wood. Then the bark began to protrude in every direction along the rock, as if it was making an effort to spread out and take the rock all in. But I don’t think it will ever succeed; for the rock was part of a ledge in a pretty large hill.”

“What a silly tree!” said Rollo.

“Father, I believe I will try the experiment some time,” continued Rollo, after a pause.

“Very well,” said his father.

“What shall I put into the tree?” asked Rollo.

“You might put in a cent,” said his father, “and then, if it should get fairly enclosed, I presume the tree will keep it safe for you a good many years.”

Rollo determined to do it. “Then,” said he, “I shall never be out of money, and that will be excellent.” His father told him that he must make a small cleft in the bark and wood, with a chisel and mallet, and then drive the cent in, edgewise, a little way.

So Rollo got his chisel and mallet, and inserted the cent according to his father’s directions, and by that time there were a good many branches and twigs on the ground, which his father had taken off from the trees, and so he began to pick them up, and put them into his wheelbarrow.

They went on working together for some time, and talking while they worked. Rollo was continually asking his father questions, and his father sometimes answered them, and sometimes did not, but was silent and thoughtful, as if he was thinking of something else. But whether he got answers or not, Rollo went on talking.

“Father,” said Rollo, at length, after a short pause, during which he had been busily at work putting twigs into his wheelbarrow, “Henry has got a very interesting book.”

His father did not answer.

I think it is a very interesting book indeed. Should not you like to read it, father?”

His father was just then reaching up very high to saw off a pretty large limb, and he paid no attention to what Rollo was saying. So Rollo went on talking half to himself—

“One story is about Aladdin and his lamp. If he rubbed his lamp, he could have whatever he wished; something would come, I have forgotten what its name was, and bring him whatever he asked for.”

Just then, down came the great branch which his father had been sawing off, falling from its place on the tree to the ground.

Rollo looked at it a moment, and then, when his father began sawing again, he said,

“Should not you like such a lamp, father?”

“Such a lamp as what, my son?” said his father.

“Why, such a one as Aladdin’s.”

“Aladdin’s! why, what do you know of Aladdin’s lamp?”

“Why, I read about it in Henry’s story book,” said Rollo. “I just told you, father.”

“Did you?” said his father. “Won’t you just hand me up the paint brush?”

“Well, father,” said Rollo, as he handed him the brush, “don’t you wish you had an Aladdin’s lamp?”

“No, not particularly,” said his father.

“O father!” exclaimed Rollo, with surprise, “I am sure I do. Don’t you wish I had such a lamp, father?”

“No,” said his father.

“Why, father, I really think I could do some good with it. For instance, I could just rub my lamp, and then have all your trees pruned for you, at once, without any further trouble.”

“But that would not be worth while; for you might have a much larger and better garden than this made at once, with thousands of trees, bearing delicious fruit; and ponds, and waterfalls, and beautiful groves.”

“O, so I could,” said Rollo.

“And, then, how soon do you think you should get tired of it, and want another?”

“O, perhaps, I should want another pretty soon; but then I could have another, you know.”

“Yes, and how long do you think you could find happiness, in calling beautiful gardens into existence, one after another?”

“O, I don’t know;—a good while.”

“A day?”

“O, yes, father.”

“A week?”

“Why, perhaps, I should be tired in a week.”

“Then all your power of receiving enjoyment from gardens would be run out and exhausted in a week; whereas mine, without any Aladdin’s lamp, lasts me year after year, pleasantly increasing all the time without ever reaching satiety.”

“What is satiety, father?”

“The feeling we experience when we have had so much of a good thing that we are completely tired and sick of it. If I should give a little child as much honey as he could eat, or let him play all the time, or buy him a vast collection of pictures, he would soon get tired of these things.”

“O father, I never should get tired of looking at pictures.”

“I think you would,” said his father.

Here the conversation stopped a few minutes, while Rollo went to wheel away a load of his sticks. Before he returned, he had prepared himself to renew his argument. He said,

“Father, even if I did get tired of making beautiful gardens, I could then do something else with the lamp, and that would give me new pleasure.”

“Yes, but the new pleasure would be run out and exhausted just as soon as the pleasure of having a garden would have been; so that you would, in a short time, be satiated with every thing, and become completely wretched and miserable.”

“But, father,” said Rollo, after being silent a little while, “I don’t think I should get tired of my beautiful gardens very soon: I don’t think I should get tired even of looking at pictures of them.”

“Should you like to try the experiment?”

“Yes, sir,” said Rollo, very eagerly.

Rollo’s father had a great many books of pictures and engravings of various kinds in his library; and sometimes he used to allow the children to see them, but only a very few at a time. They had not yet seen them all. He only allowed them to see them as fast as they had time to examine them thoroughly, and read about them and understand them. But now he said to Rollo,

“I could let you have all the books of prints and engravings I have got, and see them all at one time, and that would be giving you Aladdin’s lamp, exactly, so far as my pictures are concerned.”

“Well,” said Rollo, clapping his hands.

“But then, in a short time, you would get tired of looking at them; you would become satiated, and would in fact spoil the whole pleasure by attempting to enjoy it too fast. But then I think it would perhaps do you good.”

“How, father?”

“Why, by teaching you the value of moderation, and the uselessness of Aladdin’s lamps in all human enjoyments. It would be a very valuable experiment in intellectual philosophy, which I think it very probable might be of use to you. So, if you please, you may try it.”

“Well, father, I am sure I should like to see the pictures.”

“That is all settled then,” said his father; “some day you shall.”

THE GREAT BEETLE AND WEDGE.

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Rollo was coming home one morning after having been away on an errand, and he saw a large wood pile near Farmer Cropwell’s door. Now it happened that Rollo had once been on a journey pretty far back into the country; it was at the time when Jonas told him and Lucy the stories related in the book called “Jonas’s Stories.” On that journey, Jonas had one day told him that the sap of the maple-tree was sweet, and had let him taste of some, where it oozed out at the end of the log. Seeing Farmer Cropwell’s wood pile reminded Rollo of this; and he thought he would look at the ends of all the logs, and see if he could not find some drops of sweet sap there.

But he could not, for two reasons: none of those trees were maple-trees, and then, besides, they were all dry. There was no sap in them of any kind; at least, not enough to ooze out. While Rollo was looking there, one of Farmer Cropwell’s large boys came out with an axe in his hand. He rolled out a pretty large log of wood, though it was not very long, and struck his axe into the end of it, as if he was going to split it.

“I don’t believe you can split that great log,” said Rollo.

“I don’t expect to do it with the axe,” said the boy, as he left the axe sticking in the log.

“How then?” said Rollo.

“I have got beetle and wedges here, round behind the wood pile.”

So the boy went to another side of the wood pile, and brought a large beetle and an iron wedge. When he got back to his log, he started out the axe which he had left sticking into it. Then Rollo saw that the axe had made a little indentation, or cleft, in the wood. He put the point of the wedge into this cleft, and drove it in a very little, with a few light blows with the axe. Then he took the great heavy beetle, and began driving the wedge in, with very heavy blows.

Presently, Rollo saw a little crack beginning to extend out each side from the wedge. The crack ran along across the end of the log, and thence down the side, and grew wider and wider every moment. At last, the wedge was driven in as far as it would go, and still the log was not split open.

“Now stop,” said Rollo; “I will put a stick in, and keep the crack open, while you drive the wedge in, in another place.”

“O, that won’t do,” said the boy; “a stick would not keep it open.”

“Why not?” said Rollo.

“Because it is not solid enough; the sides of the cleft draw together very hard. They would crush the stick.”

Here Rollo put his hand into his pocket, and drew out a walnut, and he asked the boy if it would crack a walnut.

“Try it,” said the boy.

So Rollo put the walnut into the crack. He slipped it along until he got it to a place where the crack was just wide enough to receive it, and hold it steady. He left it there, and then the boy began to knock out the wedge.

He struck it first upon one side, and then upon the other, and thus gradually worked it out. The walnut was crushed all to pieces. The boy then drove in the wedge again, so as to open the log as it was before. He then went to the place where he had got the beetle and wedge at first, and brought a large wooden wedge which he had made before, and began to put that into the crack, not very far from the iron wedge.

“This will keep it open,” said he.

“Yes, I think it will,” said Rollo. “But put it up close to the iron wedge.”

“No,” said the boy; “for then I can’t knock the iron wedge out.”

So the boy put the large wooden wedge in, at a little distance from the iron one, and drove it in rather gently with the beetle. This opened the cleft a little more, so that the iron wedge came out pretty easily.

“I don’t see what makes the sides of the logs draw together so hard,” said Rollo.

“O, they can’t help it,” said the boy.

“That is no reason,” rejoined Rollo. “I should think that, after the log is once split open, it would stay so. If I split a piece of wood in two with my knife, the pieces don’t try to come together again.”