"What in the world is that boy doing?" said Mrs. Jo to herself, as she watched Dan running round the half-mile triangle as if for a wager. He was all alone, and seemed possessed by some strange desire to run himself into a fever, or break his neck; for, after several rounds, he tried leaping walls, and turning somersaults up the avenue, and finally dropped down on the grass before the door as if exhausted.

"Are you training for a race, Dan?" asked Mrs. Jo, from the window where she sat.

He looked up quickly, and stopped panting to answer, with a laugh,

"No; I'm only working off my steam."

"Can't you find a cooler way of doing it? You will be ill if you tear about so in such warm weather," said Mrs. Jo, laughing also, as she threw him out a great palm-leaf fan.

"Can't help it. I must run somewhere," answered Dan, with such an odd expression in his restless eyes, that Mrs. Jo was troubled, and asked, quickly,

"Is Plumfield getting too narrow for you?"

"I wouldn't mind if it was a little bigger. I like it though; only the fact is the devil gets into me sometimes, and then I do want to bolt."

The words seemed to come against his will, for he looked sorry the minute they were spoken, and seemed to think he deserved a reproof for his ingratitude. But Mrs. Jo understood the feeling, and though sorry to see it, she could not blame the boy for confessing it. She looked at him anxiously, seeing how tall and strong he had grown, how full of energy his face was, with its eager eyes and resolute mouth; and remembering the utter freedom he had known for years before, she felt how even the gentle restraint of this home would weigh upon him at times when the old lawless spirit stirred in him. "Yes," she said to herself, "my wild hawk needs a larger cage; and yet, if I let him go, I am afraid he will be lost. I must try and find some lure strong enough to keep him safe."

"I know all about it," she added, aloud. "It is not 'the devil,' as you call it, but the very natural desire of all young people for liberty. I used to feel just so, and once, I really did think for a minute that I would bolt."

"Why didn't you?" said Dan, coming to lean on the low window-ledge, with an evident desire to continue the subject.

"I knew it was foolish, and love for my mother kept me at home."

"I haven't got any mother," began Dan.

"I thought you had now," said Mrs. Jo, gently stroking the rough hair off his hot forehead.

"You are no end good to me, and I can't ever thank you enough, but it just isn't the same, is it?" and Dan looked up at her with a wistful, hungry look that went to her heart.

"No, dear, it is not the same, and never can be. I think an own mother would have been a great deal to you. But as that cannot be, you must try to let me fill her place. I fear I have not done all I ought, or you would not want to leave me," she added, sorrowfully.

"Yes, you have!" cried Dan, eagerly. "I don't want to go, and I won't go, if I can help it; but every now and then I feel as if I must burst out somehow. I want to run straight ahead somewhere, to smash something, or pitch into somebody. Don't know why, but I do, and that's all about it."

Dan laughed as he spoke, but he meant what he said, for he knit his black brows, and brought down his fist on the ledge with such force, that Mrs. Jo's thimble flew off into the grass. He brought it back, and as she took it she held the big, brown hand a minute, saying, with a look that showed the words cost her something

"Well, Dan, run if you must, but don't run very far; and come back to me soon, for I want you very much."

He was rather taken aback by this unexpected permission to play truant, and somehow it seemed to lessen his desire to go. He did not understand why, but Mrs. Jo did, and, knowing the natural perversity of the human mind, counted on it to help her now. She felt instinctively that the more the boy was restrained the more he would fret against it; but leave him free, and the mere sense of liberty would content him, joined to the knowledge that his presence was dear to those whom he loved best. It was a little experiment, but it succeeded, for Dan stood silent a moment, unconsciously picking the fan to pieces and turning the matter over in his mind. He felt that she appealed to his heart and his honor, and owned that he understood it by saying presently, with a mixture of regret and resolution in his face,

"I won't go yet awhile, and I'll give you fair warning before I bolt. That's fair, isn't it?"

"Yes, we will let it stand so. Now, I want to see if I can't find some way for you to work off your steam better than running about the place like a mad dog, spoiling my fans, or fighting with the boys. What can we invent?" and while Dan tried to repair the mischief he had done, Mrs. Jo racked her brain for some new device to keep her truant safe until he had learned to love his lessons better.

"How would you like to be my express-man?" she said, as a sudden thought popped into her head.

"Go into town, and do the errands?" asked Dan, looking interested at once.

"Yes; Franz is tired of it, Silas cannot be spared just now, and Mr. Bhaer has no time. Old Andy is a safe horse, you are a good driver, and know your way about the city as well as a postman. Suppose you try it, and see if it won't do most as well to drive away two or three times a week as to run away once a month."

"I'd like it ever so much, only I must go alone and do it all myself. I don't want any of the other fellows bothering round," said Dan, taking to the new idea so kindly that he began to put on business airs already.

"If Mr. Bhaer does not object you shall have it all your own way. I suppose Emil will growl, but he cannot be trusted with horses, and you can. By the way, to-morrow is market-day, and I must make out my list. You had better see that the wagon is in order, and tell Silas to have the fruit and vegetables ready for mother. You will have to be up early and get back in time for school, can you do that?"

"I'm always an early bird, so I don't mind," and Dan slung on his jacket with despatch.

"The early bird got the worm this time, I'm sure," said Mrs. Jo, merrily.

"And a jolly good worm it is," answered Dan, as he went laughing away to put a new lash to the whip, wash the wagon, and order Silas about with all the importance of a young express-man.

"Before he is tired of this I will find something else and have it ready when the next restless fit comes on," said Mrs. Jo to herself, as she wrote her list with a deep sense of gratitude that all her boys were not Dans.

Mr. Bhaer did not entirely approve of the new plan, but agreed to give it a trial, which put Dan on his mettle, and caused him to give up certain wild plans of his own, in which the new lash and the long hill were to have borne a part. He was up and away very early the next morning, heroically resisting the temptation to race with the milkmen going into town. Once there, he did his errands carefully, to Mr. Bhaer's surprise and Mrs. Jo's great satisfaction. The Commodore did growl at Dan's promotion, but was pacified by a superior padlock to his new boat-house, and the thought that seamen were meant for higher honors than driving market-wagons and doing family errands. So Dan filled his new office well and contentedly for weeks, and said no more about bolting. But one day Mr. Bhaer found him pummelling Jack, who was roaring for mercy under his knee.

"Why, Dan, I thought you had given up fighting," he said, as he went to the rescue.

"We ain't fighting, we are only wrestling," answered Dan, leaving off reluctantly.

"It looks very much like it, and feels like it, hey, Jack?" said Mr. Bhaer, as the defeated gentleman got upon his legs with difficulty.

"Catch me wrestling with him again. He's most knocked my head off," snarled Jack, holding on to that portion of his frame as if it really was loose upon his shoulders.

"The fact is, we began in fun, but when I got him down I couldn't help pounding him. Sorry I hurt you, old fellow," explained Dan, looking rather ashamed of himself.

"I understand. The longing to pitch into somebody was so strong you couldn't resist. You are a sort of Berserker, Dan, and something to tussle with is as necessary to you as music is to Nat," said Mr. Bhaer, who knew all about the conversation between the boy and Mrs. Jo.

"Can't help it. So if you don't want to be pounded you'd better keep out of the way," answered Dan, with a warning look in his black eyes that made Jack sheer off in haste.

"If you want something to wrestle with, I will give you a tougher specimen than Jack," said Mr. Bhaer; and, leading the way to the wood-yard, he pointed out certain roots of trees that had been grubbed up in the spring, and had been lying there waiting to be split.

"There, when you feel inclined to maltreat the boys, just come and work off your energies here, and I'll thank you for it."

"So I will;" and, seizing the axe that lay............