Part 15

"What is the matter with it?" said Rollo.

"I don't know," said Nathan, "only it won't split."

So Rollo went in to see. He found that Nathan had gone to work wrong. Instead of trying to drive the wedge into the end of the board, so as to split it along the grain, he had made the cleft with the knife in the side of the board, and was attempting to drive it in there, as if he supposed he could split the board across the grain.

"Why, Nathan," said Rollo, "that isn't right. You can't split it across."

Then he put the wedge into the end, where it ought to be put, and set Nathan to driving it. Now it began to split at once; though Nathan could not see why the board should not split one way as well as the other.

Rollo himself did not understand it very well. Nathan asked him why it would not split the other way, and he said that that was across the grain. But when Nathan asked him what he meant by grain, he could not tell.

He took up the wood and examined it, and observed little lines and ridges, running along in the direction in which it would split; but at the ends of the board, where it had been sawed across the grain, it was rough. He determined to ask Jonas about it, or his father.

He then went to work, and made the wedges and a little beetle for Nathan. He made Nathan's beetle smaller than his own, because Nathan was not strong enough to strike hard with such a heavy beetle. He did not get it done in season to use that day; but, the next day, he and Nathan sat down upon the shed floor, and spent an hour in splitting up the boards. They split them all up into good, fine kindling wood. Then they piled the pieces up in a neat pile, and then brought Dorothy out to see them.

Dorothy seemed very much pleased, and promised the boys that, the next time she baked pies, she would kindle the fire in the oven with their kindling wood, and then she would bake them each a little apple turnover.

* * * * *

That evening, just before Rollo went to bed, he asked Jonas if he could tell him why boards would only split along the grain.

"Yes," said Jonas, "I think I can tell you. But do you know what the grain is?"

"No," said Rollo, "I don't know any thing about it."

"You know that boards are made from the stems of tall trees."

"Yes," said Rollo.

"Well, now when trees are growing, there are little channels running up and down from the roots to the branches."

"What are they for?" said Rollo.

"They are for the sap. The sap flows up and down in them. But then there are no channels across from one side of the tree to the other, because there is no sap to go across. The sap all has to go up from the roots to the branches; and so the channels must all be up and down the tree.

"Now," continued Jonas, "when they cut down the tree, the trunk will split easily, up and down, the way the channels and fibres all go; but it won't split easily across. And just so, when they saw it up into boards, the boards will all split lengthwise, from end to end, for this is the way the channels and fibres all lie; but it won't split across, for that would be across all the fibres, and the wood is made very strong in that direction, and it is well it is so."

"Why?" said Rollo.

"Because, if trees would split across, as easily as they do up and down, the first good wind would blow down all the forests in the world."

"O, Jonas!" exclaimed Rollo, "all the forests in the world?"

"Yes," replied Jonas, "if the wind blew all over the world."

HOROLOGY.

One day, at eleven o'clock, Rollo, after having put away his books carefully into his desk, went out to play. It was a calm and pleasant autumnal day. Brown and yellow leaves were falling from the trees, and lying about the yard. Rollo found Nathan sitting upon the steps of the door which looked toward the garden yard. He felt satisfied and happy, for he had studied his lessons diligently, and, when he saw Nathan, he concluded to have a little play with him.

"Now, Nathan," said Rollo, "I will lie down upon the steps, and make believe I am a bear gone to sleep, and you come and poke me with your stick, and then I will growl at you."

"Well," said Nathan, "I will."

So Rollo laid down upon the steps, putting his arms upon the threshold of the door for a pillow, and his head upon his arms, and pretended to be asleep; but he did not look much as if he was asleep, after all, for he could not look quite sober. He tried to look sober; but there was a lurking smile upon his face, which made his countenance look quite different from that of a bear. Nathan came creeping along softly, and when he got near enough, he began to poke him with the end of his little whip-handle; then Rollo would start up and begin to growl, when Nathan would scamper away, shouting with laughter, Rollo after him, upon all-fours.