"Do you know what he was looking for, Wigan?" Quarles asked.
"Something in bone or ivory."
"Bone," answered Quarles. "Thank heaven that fool Tresman didn't come sooner! We might have missed much that was interesting. You noted how keen he was with every piece of bone he could find, how irritable he was growing. The counters, Wigan, they were the clew. But I did not understand their significance at first."
"I do not understand the case now," I confessed, "except that we have caught a mad burglar."
"Yes, it's an asylum case, not a prison one," said Quarles. "What was the man looking for? That was my first question, as I told you. If he had not found it at Sir Joseph's he would look again. He did, and visited two other doctors. Round counters—doctors. There was the link. I daresay you know, Wigan, there is an annual published giving particulars of all the hospitals, with the names of the medical staff, consulting surgeons and physicians, and so forth. In the paragraph concerning St. James's Hospital you will find that the first three names mentioned are Sir Joseph Maynard, Dr. Wheatley, and Dr. Wood. The fourth is Dr. Tresman. It could not be chance that the burglar had visited these men in exact order, so I argued that he would next go to Dr. Tresman. The man had had something to do with St. James's Hospital, and, since he was acting like a madman, yet with method, I judged he had been a patient who had undergone an operation, outwardly successful, really a failure. He was looking for something of which a doctor at this hospital had robbed him, as he imagined, and, not knowing which doctor, looked at this annual and began at the first name. I have no doubt he was conscious of the loss of some sense or faculty, and believed that if he could get back the something that was missing he would recover this sense. Moreover, he was exceedingly anxious that no one should guess what he was looking for, so he attempted to suggest that a gang was at work—the glasses, the crumbs, the cigarette-ends, all placed where they would be certain to attract notice. Did you see how he touched his head several times to-night?"
"Yes."
"That gives the explanation, I think," said Quarles. "To relieve some injury to his head, he was trepanned at St. James's Hospital, and he was looking for the bone which the little circular trephine had cut from his head. I have no doubt he examined Sir Joseph's round counters very carefully to make sure that what he wanted was not among them, and he would naturally damage Dr. Wood's specimens. Probably the original pressure was relieved by the operation, but in some other way the brain was injured. We have seen the result."
Subsequent inquiry at St. James's Hospital proved that Quarles was right. The man was a gentleman of small independent means, a bachelor, and practically alone in the world. There was no one to watch his goings and comings, no one to take note of his growing peculiarities. His madness was intermittent, but the doctors said he would probably become worse, as, indeed, he did, poor fellow!
"Ah, it is wonderful what surgery can do," said Quarles afterward. "But there are limitations, Wigan, great limitations. And when we come to the brain, great heavens! We are mere babies playing with a mechanism of which we know practically nothing. No wonder we so often make a mess of it."