At first he had been impressed by her wild beauty, and the contrast of all her looks and ways with those of the girls around her. Presently a sense of some ill-defined personal element, which half attracted and half repelled those who looked upon her, and especially those on whom she looked, began to make itself obvious to him, as he soon found it was painfully sensible to his more susceptible companion, the lady-teacher. It was not merely in the cold light of her diamond eyes, but in all her movements, in her graceful postures as she sat, in her costume, and, he sometimes thought, even in her speech, that this obscure and exceptional character betrayed itself. When Helen had said, that, if they were living in times when human beings were subject to possession, she should have thought there was something not human about Elsie, it struck an unsuspected vein of thought in his own mind, which he hated to put in words, but which was continually trying to articulate itself among the dumb thoughts which lie under the perpetual stream of mental whispers. Mr. Bernard's professional training had made him slow to accept marvellous stories and many forms of superstition. Yet, as a man of science, he well knew that just on the verge of the demonstrable facts of physics and physiology there is a nebulous border-land which what is called "common sense" perhaps does wisely not to enter, but which uncommon sense, or the fine apprehension of privileged intelligences, may cautiously explore, and in so doing find itself behind the scenes which make up for the gazing world the show which is called Nature. It was with something of this finer perception, perhaps with some degree of imaginative exaltation, that he set himself to solving the problem of Elsie's influence to attract and repel those around her. His letter already submitted to the reader hints in what direction his thoughts were disposed to turn. Here was a magnificent organization, superb in vigorous womanhood, with a beauty such as never comes but after generations of culture; yet through all this rich nature there ran some alien current of influence, sinuous and dark, as when a clouded streak seams the white marble of a perfect statue.