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“Here is an advertisement which will interest you,” said he. “It appeared in all the papers about a year ago. Listen to this:

“Lost, on the 9th inst., Mr. Jeremiah Hayling, aged twenty-six, a hydraulic engineer. Left his lodgings at ten o’clock at night, and has not been heard of since. Was dressed in–

etc., etc. Ha! That represents the last time that the colonel needed to have his machine overhauled, I fancy.”

“Good heavens!” cried my patient. “Then that explains what the girl said.”

“Undoubtedly. It is quite clear that the colonel was a cool and desperate man, who was absolutely determined that nothing should stand in the way of his little game, like those out-and-out pirates who will leave no survivor from a captured ship. Well, every moment now is precious, so if you feel equal to it we shall go down to Scotland Yard at once as a preliminary to starting for Eyford.”

Some three hours or so afterwards we were all in the train together, bound from Reading to the little Berkshire village. There were Sherlock Holmes, the hydraulic engineer, Inspector Bradstreet, of Scotland Yard, a plain-clothes man, and myself. Bradstreet had spread an ordnance map of the county out upon the seat and was busy with his compasses drawing a circle with Eyford for its centre.

“There you are,” said he. “That circle is drawn at a radius of ten miles from the village. The place we want must be somewhere near that line. You said ten miles, I think, sir.”

“It was an hour’s good drive.”

“And you think that they brought you back all that way when you were unconscious?”

“They must have done so. I have a confused memory, too, of having been lifted and conveyed somewhere.”

“What I cannot understand,” said I, “is why they should have spared you when they found you lying fainting in the garden. Perhaps the villain was softened by the woman’s entreaties.”

“I hardly think that likely. I never saw a more inexorable face in my life.”

“Oh, we shall soon clear up all that,” said Bradstreet. “Well, I have drawn my circle, and I only wish I knew at what point upon it the folk that we are in search of are to be found.”

“I think I could lay my finger on it,” said Holmes quietly.

“Really, now!” cried the inspector, “you have formed your opinion! Come, now, we shall see who agrees with you. I say it is south, for the country is more deserted there.”

“And I say east,” said my patient.

“I am for west,” remarked the plain-clothes man. “There are several quiet little villages up there.”

“And I am for north,” said I, “because there are no hills there, and our friend says that he did not notice the carriage go up any.”

“Come,” cried the inspector, laughing; “it’s a very pretty diversity of opinion. We have boxed the compass among us. Who do you give your casting vote to?”

“You are all wrong.”

“But we can’t all be.”

“Oh, yes, you can. This is my point.” He placed his finger in the centre of the circle. “This is where we shall find them.”

“But the twelve-mile drive?” gasped Hatherley.

“Six out and six back. Nothing simpler. You say yourself that the horse was fresh and glossy when you got in. How could it be that if it had gone twelve miles over heavy roads?”

“Indeed, it is a likely ruse enough,” observed Bradstreet thoughtfully. “Of course there can be no doubt as to the nature of this gang.”

“None at all,” said Holmes. “They are coiners on a large scale, and have used the machine to form the amalgam which has taken the place of silver.”

“We have known for some time that a clever gang was at work,” said the inspector. “They have been turning out half-crowns by the thousand. We even traced them as far as Reading, but could get no farther, for they had covered their traces in a way that showed that they were very old hands. But now, thanks to this lucky chance, I think that we have got them right enough.”

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