"I don't think serious investigation capable of dealing with the circumstances," answered the doctor. "Put it in that way, and you put it right. Just look round you. Here we three persons are alive and hearty at this snug table. If (which God forbid!) good Mistress Germaine or yourself were to fall down dead in another moment, I, doctor as I am, could no more explain what first principle of life and movement had been suddenly extinguished in you than the dog there sleeping on the hearth-rug. If I am content to sit down ignorant in the face of such an impenetrable mystery as this--presented to me, day after day, every time I see a living creature come into the world or go out of it--why may I not sit down content in the face of your lady in the summer-house, and say she's altogether beyond my fathoming, and there is an end of her?" At those words my mother joined in the conversation for the first time. "Ah, sir," she said, "if you could only persuade my son to take your sensible view, how happy I should be! Would you believe it?--he positively means (if he can find the place) to go to Saint Anthony's Well!" Even this revelation entirely failed to surprise Mr. MacGlue. "Ay, ay. He means to keep his appointment with the ghost, does he? Well, I can be of some service to him if he sticks to his resolution. I can tell him of another man who kept a written appointment with a ghost, and what came of it." This was a startling announcement. Did he really mean what he said? "Are you in jest or in earnest?" I asked. "I never joke, sir," said Mr. MacGlue. "No sick person really believes in a doctor who jokes. I defy you to show me a man at the head of our profession who has ever been discovered in high spirits (in medical hours) by his nearest and dearest friend. You may have wondered, I dare say, at seeing me take your strange narrative as coolly as I do. It comes naturally, sir. Yours is not the first story of a ghost and a pencil that I have heard." "Do you mean to tell me," I said, "that you know of another man who has seen what I have seen?"