animals. Its absolute poise of bearing brought into his mind the opium-eater's words that "no dignity is perfect which does not at some point ally itself with the mysterious"; and he became suddenly aware that the presence of the dog in this foggy, haunted room on the top of Putney Hill was uncommonly welcome to him. He was glad to feel that Flame's dependable personality was with him. The savage growling at his heels was a pleasant sound. He was glad to hear it. That marching cat made him uneasy.
Finding that Smoke paid no further attention to his words, the doctor decided upon action. Would it rub against his leg, too? He would take it by surprise and see.
He stepped quickly forward and placed himself upon the exact strip of carpet where it walked.
But no cat is ever taken by surprise! The moment he occupied the space of the Intruder, setting his feet on the woven roses midway in the line of travel, Smoke suddenly stopped purring and sat down. It lifted up its face with the most innocent stare imaginable of its green eyes. He could have sworn it laughed. It was a perfect child again. In a single second it had resumed its simple, domestic manner; and it gazed at him in such a way that he almost felt Smoke was the normal being, and his was the eccentric behaviour that was being watched. It was consummate, the manner in which it brought about this change so easily and so quickly.
"Superb little actor!" he laughed in spite of himself, and stooped to stroke the shining black back. But, in a flash, as he touched its fur, the cat turned and spat at him viciously, striking at his hand with one
