Read it through once

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,--