“Because you forget things after a certain time, eh? Stuff! Don’t be foolish. Why, you never used to think that your brain was going wrong when you were a schoolboy, and every word of the lesson that you knew perfectly and said verbatim to a schoolfellow dropped out of your mind.”

“No.”

“Of course you did not; and as to going mad, why, my dear boy, have you any idea what a lunatic is?”

“I cannot say that I have.”

“Well, then, you shall have,” said the doctor; “and that will do you more good than all my talking. You shall see for yourself what a diseased mind really is, and that will strengthen you mentally, and show you how ill-advised are your fancies.”

“But, doctor, I should not like to be a witness of the sufferings of others.”

“Nonsense, my boy. There, pray don’t imagine, because I live at Highgate, and am licenced to have so many insane patients under my care, that you are going to see horrible creatures dressed in straw and grovelling in cells. My dear John, I am going to ask you to a mad dinner-party.”

“A mad dinner-party?”

“Well, there, to come and dine with my sister, myself, and our patients. No people hung in chains or straw. Perfectly quiet gentlemen, my dear fellow, but each troubled with a craze. You would not know that they had anything wrong if they did not break out now and then upon the particular subject. Come to-night at seven sharp.”

The doctor glanced at his watch, rose, and held out his hand; and though John Huish hesitated, the doctor’s eyes seemed to force him to say that he would be there, and he began to feel for his purse.