And she really did it very well, with an assumption of chagrin that could not fail to call attention subtly to the contrast between the sisters. When Split failed in her lessons with a completeness, a sensational ostentation that was shocking to Sissy, that Number 1 scholar blushed gently, and, discreetly lowering her head, became absorbed in her work. After school, when Split was being kept in and disciplined (a process which never failed effectually to discipline the hardy individual who attempted it), when she wept and stormed and raged and threw caution to the winds as only tempestuous Split could, then was Sissy's attitude a marvel of disapproving rectitude. She had a great deal of dignity, had Sissy, and the picture of holiness that she presented as, with her books on her arm, she walked past the desk where the sobbing sinner's head lay with tumbled curls and bloated face, came as near as anything could to quench the passion of tears in which Split's tempers culminated. On such occasions the infuriated Split was wont, for just a moment, to conquer the half-hysterical sobs that threatened to choke her as well as inundate the world, and make a face at Saint Cecilia as she passed holily by. But Cecilia was a Madigan always, as well as a saint temporarily, and her eyes were turned prudently away just then, as though she were already studiously pondering to-morrow's lesson. But Sissy blushed her most perfect disapproval when she played chaperon to her elder sister. It was a position for which she felt herself peculiarly fitted, even without the semi-official commission she held--a position which so conscientious a person could not regard in the light of a sinecure. As she danced only the more sedate dances, because of that obtrusive tendency of the red sham to her skirt, Sissy was able to chaperon her senior all the more effectively at Crosby Pemberton's party. Irene danced like a thing whose vocation is motion. She was a twig in a rain-storm, a butterfly seeking sweets, a humming-bird whose wing beat the air with a very rhapsody of rhythm. She was on the floor with the first note Professor Trask struck, and she danced down the side of the little hall, when the waltz was over and all the other couples had seated themselves, as though the meter of the music had bewitched her feet and they might nevermore walk soberly. "Split--don't!" It was the shocked voice of her young chaperon. "Sissy--don't!" mocked the mutinous Split. Even after she took the seat beside Sissy, her heels were lifted and the toes of her slippers were beating time. She sat there chattering to a group of boys buzzing about her, upon whom her high spirits had the effect that dance-music had upon herself. "You're the prettiest girl I've seen since I left the city, Irene," patronizingly whispered the boy lately from San Francisco, whose metropolitan elegances had dazzled the eyes of the mountain maidens.