He smiled, giving an imitation of the sphinx. He was happy enough as mortals go. His wife was perhaps a little better. And he was gradually launching himself into an industrious career of idleness. Also, he had broken the ice,--the ice, that is to say, of tuition in dancing. Not a word had been spoken abroad in the house about the first dancing-lesson. He had had it while Mrs. Prohack was, in theory at least, paying calls; at any rate she had set forth in the car. Mr. Prohack and Sissie had rolled up the drawing-room carpet and moved the furniture themselves. Mr. Prohack had unpacked the gramophone in person. They had locked the drawing-room door. At the end of the lesson they had relaid the carpet and replaced the furniture and enclosed the gramophone and unlocked the door, and Mr. Prohack had issued from the drawing-room like a criminal. The thought in his mind had been that he was no end of a dog and of a brave dog at that. Then he sneered at himself for thinking such a foolish thought. After all, what was there in learning to dance? But the sneer was misplaced. His original notion that he had done something courageous and wonderful was just a notion. The lesson had favoured the new nascent intimacy with his daughter. Evidently she was a born teacher as well as a born dancer. He perceived in two minutes how marvellous her feet were. She guided him with pressures light as a feather. She allowed herself to be guided with an intuitive responsiveness that had to be felt to be believed. Her exhortations were delicious, her reprimands exquisite, her patience was infinite. Further, she said that he had what she called "natural rhythm," and would learn easily and satisfactorily. Best of all, he had been immediately aware of the physical benefit of the exercise. The household was supposed to know naught of the affair, but the kitchen knew a good deal about it somehow; the kitchen was pleasantly and rather condescendingly excited, and a little censorious, for the reason that nobody in the kitchen had ever before lived in a house the master of which being a parent of adult children took surreptitious lessons in dancing; the thing was unprecedented, and therefore of course intrinsically reprehensible. Mr. Prohack guessed the attitude of the kitchen, and had met Machin's respectful glance with a self-conscious eye.