hers, to allow the musical tones proceeding from a pair of rosy and youthful lips to fall more clearly upon her companion's ear. Thus they continued a conversation apparently of deep interest to both, and which they suspended only when some passing party of masks lingered for an instant beside the fountain, until the end of the quadrille brought a throng of dancers into the conservatory. Then they left the place, and sauntered back into the ball-room. Meanwhile the third domino watched the conservatory doors with a lynx-eyed vigilance worthy a pupil of the celebrated Vidocq. Although the loose black dress might have covered either a short man or a woman of the middle stature, the delicacy of the gloved fingers, and of the tiny foot that peeped from below its border, left little doubt as to the sex of its wearer. From a convenient position on the steps leading up to an orchestra, the fringe of her mask confined by her hand, so as to prohibit even a glimpse of her ivory chin, she subjected to a rigid scrutiny all who issued from the conservatory. Suddenly, from the door nearest to her, the hussar and his companion made their appearance, and, as they passed, she shrouded herself behind the portly figure and sumptuous embroideries of a Venetian doge. Then she resumed her watch, and a minute had not elapsed when she saw the tall black domino, whom she had observed during the evening, re-enter the dancing-room and make his way as fast as the crowd would allow him to the nearest door of exit, with a hurried and irregular step, hardly to be explained otherwise than by sudden illness or violent emotion. She followed him to the head of the staircase, down which he rushed, disappearing at its foot through the crowd of lackeys in the hall. Having seen this, she re-entered the ball-room, sought out the hussar and his companion, and soon afterwards was whirling with the former in the giddy circles of a waltz. Some hours later, as the Hungarian retired from the ball, almost borne along in the dense stream of masks that now flowed through the rooms, he felt a momentary pressure of his hand. A paper remained in its palm, upon which his fingers mechanically closed. Amidst the ever-moving throng it was impossible to detect the person from whom he had received it. By this time a large portion of the company, oppressed by the heat, had unmasked, but he knew none of the faces he saw around him, whilst of those who had preserved their vizards he could fix on none as object of suspicion. So soon as he could extricate himself from the crowd, he unfolded the paper. It contained the following mysterious words, hastily scrawled with a pencil:-- "One whom you think asleep wakes and watches. He is here; has followed and overheard you, and will seek revenge. Be prepared. Proof is difficult: denial may be safety. Adopt it at all risks. Masked, the sisters are undistinguishable. Credit this warning from a sincere friend."