But the lesson did not go at all for a few minutes because Mr. Bhaer caught sight of a picture on the hat, and unfolding it, said with great disgust, “I wish these papers did not come in the house.  They are not for children to see, nor young people to read.  It is not well, and I haf no patience with those who make this harm.”

Jo glanced at the sheet and saw a pleasing illustration composed of a lunatic, a corpse, a villain, and a viper.  She did not like it, but the impulse that made her turn it over was not one of displeasure but fear, because for a minute she fancied the paper was the Volcano.  It was not, however, and her panic subsided as she remembered that even if it had been and one of her own tales in it, there would have been no name to betray her.  She had betrayed herself, however, by a look and a blush, for though an absent man, the Professor saw a good deal more than people fancied.  He knew that Jo wrote, and had met her down among the newspaper offices more than once, but as she never spoke of it, he asked no questions in spite of a strong desire to see her work.  Now it occurred to him that she was doing what she was ashamed to own, and it troubled him.  He did not say to himself, “It is none of my business.  I’ve no right to say anything,” as many people would have done.  He only remembered that she was young and poor, a girl far away from mother’s love and father’s care, and he was moved to help her with an impulse as quick and natural as that which would prompt him to put out his hand to save a baby from a puddle.  All this flashed through his mind in a minute, but not a trace of it appeared in his face, and by the time the paper was turned, and Jo’s needle threaded, he was ready to say quite naturally, but very gravely . . .

“Yes, you are right to put it from you.  I do not think that good young girls should see such things.  They are made pleasant to some, but I would more rather give my boys gunpowder to play with than this bad trash.”

“All may not be bad, only silly, you know, and if there is a demand for it, I don’t see any harm in supplying it.  Many very respectable people make an honest living out of what are called sensation stories,” said Jo, scratching gathers so energetically that a row of little slits followed her pin.

“There is a demand for whisky, but I think you and I do not care to sell it.  If the respectable people knew what harm they did, they would not feel that the living was honest.  They haf no right to put poison in the sugarplum, and let the small ones eat it.  No, they should think a little, and sweep mud in the street before they do this thing.”

Mr. Bhaer spoke warmly, and walked to the fire, crumpling the paper in his hands.  Jo sat still, looking as if the fire had come to her, for her cheeks burned long after the cocked hat had turned to smoke and gone harmlessly up the chimney.

“I should like much to send all the rest after him,” muttered the Professor, coming back with a relieved air.