Sir John Millbank was very well known in the town, it seemed. He was a merchant prince, an exporter of pens, three times mayor, and reported to be fully worth two millions sterling.

The Towers was his palatial seat, just outside the city. His wife had been an invalid for some years, and was growing worse. So far the whole thing seemed to be genuine enough. By some amazing chance these people really had sent for him.

And then another doubt assailed him, and he turned back into the shop.

"I am your neighbour, Dr. Horace Wilkinson," said he. "Is there any other medical man of that name in the town?"

No, the stationer was quite positive that there was not.

That was final, then. A great good fortune had come in his way, and he must take prompt advantage of it. He called a cab and drove furiously to the Towers, with his brain in a whirl, giddy with hope and delight at one moment, and sickened with fears and doubts at the next lest the case should in some way be beyond his powers, or lest he should find at some critical moment that he was without the instrument or appliance that was needed. Every strange and outre case of which he had ever heard or read came back into his mind, and long before he reached the Towers he had worked himself into a positive conviction that he would be instantly required to do a trephining at the least.

The Towers was a very large house, standing back amid trees, at the head of a winding drive. As he drove up the doctor sprang out, paid away half his worldly assets as a fare, and followed a stately footman who, having taken his name, led him through the oak-panelled, stained-glass hall, gorgeous with deers' heads and ancient armour, and ushered him into a large sitting-room beyond. A very irritable- looking, acid-faced man was seated in an armchair by the fireplace, while two young ladies in white were standing together in the bow window at the further end.

"Hullo! hullo! hullo! What's this--heh?" cried the irritable man. "Are you Dr. Wilkinson? Eh?"

"Yes, sir, I am Dr. Wilkinson."

"Really, now. You seem very young--much younger than I expected. Well, well, well, Mason's old, and yet he don't seem to know much about it. I suppose we must try the other end now. You're the Wilkinson who wrote something about the lungs? Heh?"

Here was a light! The only two letters which the doctor had ever written to The Lancet--modest little letters thrust away in a back column among the wrangles about medical ethics and the inquiries as to how much it took to keep a horse in the country--had been upon pulmonary disease. They had not been wasted, then. Some eye had picked them out and marked the name of the writer. Who could say that work was ever wasted, or that merit did not promptly meet with its reward?

"Yes, I have written on the subject."

"Ha! Well, then, where's Mason?"

"I have not the pleasure of his acquaintance."

"No?--that's queer too. He knows you and thinks a lot of your opinion. You're a stranger in the town, are you not?"

"Yes, I have only been here a very short time."

"That was what Mason said. He didn't give me the address. Said he would call on you and bring you, but when the wife got worse of course I inquired for you and sent for you direct. I sent for Mason, too, but he was out. However, we can't wait for him, so just run away upstairs and do what you can."

"Well, I am placed in a rather delicate position," said Dr. Horace Wilkinson, with some hesitation. "I am here, as I understand, to meet my colleague, Dr.