“Not at all,” he said cheerfully. “Today I take my seat, as I've arranged it, you see, over there with them, and watch 'em go through the motions. One rehearsal's enough for ME. At the same time, I can chip in if necessary.” And before she could reply he was out of the schoolhouse again, hailing the new-comers. This was done with apparently such delight to the children and with some evidently imported expression into his smooth mask-like face, that Mrs. Martin had to content herself with watching him with equal curiosity. She was turning away with a sudden sense of forgotten dignity, when a shout of joyous, childish laughter attracted her attention to the window. The new assistant, with half a dozen small children on his square shoulders, walking with bent back and every simulation of advanced senility, was evidently personating, with the assistance of astonishingly distorted features, the ogre of a Christmas pantomime. As his eye caught hers the expression vanished, the mask-like face returned; he set the children down, and moved away. And when school began, although he marshaled them triumphantly to the very door,--with what contortion of face or simulation of character she was unable to guess,--after he had entered the schoolroom and taken his seat every vestige of his previous facial aberration was gone, and only his usual stolidity remained. In vain, as Mrs. Martin expected, the hundred delighted little eyes before her dwelt at first eagerly and hopefully upon his face, but, as she HAD NOT expected, recognizing from the blankness of his demeanor that the previous performance was intended for them exclusively, the same eager eyes were presently dropped again upon their books in simple imitation, as if he were one of themselves. Mrs. Martin breathed freely, and lessons began.