looks about him nervously from side to side. Think, think! Surely you must have seen him. Perhaps you are an habitué of this engaging quarter; you may have met him on some previous Saturday. I may have been mistaken in supposing that he turned up that side street; he may have gone on, and you may have passed each other. Oh, tell me, sir, whether you have not seen him?"
"I am afraid I do not keep a very sharp lookout when I am walking," said Phillipps, who would have passed his mother unnoticed; "but I am sure your description is admirable. And now will you describe the person, who, you say, held your brother by the arm?"
"I cannot do so. I told you, his face seemed devoid of expression or salient feature. It was like a mask."
"Exactly; you cannot describe what you have never seen. I need hardly point out to you the conclusion to be drawn; you have been the victim of an hallucination. You expected to see your brother, you were alarmed because you did not see him, and unconsciously, no doubt, your brain went to work, and finally you saw a mere projection of your own morbid thoughts; a vision of your absent brother, and a mere confusion of terrors incorporated in a figure which you can't describe. Of course your brother has been in some way prevented from coming to meet you as usual. I expect you will hear from him in a day or two."
The lady looked seriously at Mr. Phillipps, and then for a second there seemed almost a twinkling as of mirth about her eyes, but her face clouded
