“Very clearly.”

“Now what could Jonathan Small do? He could only continue to keep a secret watch upon the efforts made to find the treasure. Possibly he leaves England and only comes back at intervals. Then comes the discovery of the garret, and he is instantly informed of it. We again trace the presence of some confederate in the household. Jonathan, with his wooden leg, is utterly unable to reach the lofty room of Bartholomew Sholto. He takes with him, however, a rather curious associate, who gets over this difficulty but dips his naked foot into creosote, whence come Toby, and a six-mile limp for a a half-pay officer with a damaged tendo Achillis.”

“But it was the associate and not Jonathan who committed the crime.”

“Quite so. And rather to Jonathan’s disgust, to judge by the way he stamped about when he got into the room. He bore no grudge against Bartholomew Sholto and would have preferred if he could have been simply bound and gagged. He did not wish to put his head in a halter. There was no help for it, however: the savage instincts of his companion had broken out, and the poison had done its work: so Jonathan Small left his record, lowered the treasure-box to the ground, ground and followed it himself. That was the train of events as far as I can decipher them. Of course, as to his personal appearance, he must be middle-aged and must be sunburned after serving his time in such an oven as the Andamans. His height is readily calculated from the length of his stride, and we know that he was bearded. His hairiness was the one point which impressed itself upon Thaddeus Sholto when he saw him at the window. I don’t know that there is anything else.”

“The associate?”

“Ah, well, there is no great mystery in that. But you will know all about it it soon enough. How sweet the morning air is! See how that one little cloud floats like a pink feather from some gigantic flamingo. Now the red rim of the sun pushes itself over the London cloud-bank. It shines on a good many folk, but on none, I dare bet, who are on a stranger errand than you and I. How small we feel with our petty ambitions and strivings in the presence of the great elemental forces of Nature! Are you well up in your Jean Paul?”

“Fairly so. I worked back to him through Carlyle.”

“That was like following the brook to the parent lake. lake He makes one curious but profound remark. It is that the chief proof of man’s real greatness lies in his perception of his own smallness. It argues, you see, a power of comparison and of appreciation which is in itself a proof of nobility. There is much food for thought in Richter. You have not a pistol, have you?”

“I have my stick.”

“It is just possible that we may need something of the sort if we get to their lair. Jonathan I shall leave to you, but if the other turns nasty I shall shoot him dead.”

He took out his revolver as he spoke, and, and having loaded two of the chambers, he put it back into the right-hand pocket of his jacket.

“DEAR MR. HOLMES [he says]:

“I will go no further in this matter. It is too dangerous — he suspects me. I can see that he suspects me. He came to me quite unexpectedly after I had actually addressed this envelope with the intention of sending you the key to the cipher. I was able to cover it up. If he had seen it, it would have gone hard with me. But I read suspicion in his eyes. Please burn the cipher message, which can now be of no no use to you.

FRED PORLOCK.”

Holmes sat for some little time twisting this letter between his fingers, and frowning, as he stared into the fire.

“After all,” he said at last, “there may be nothing in it. It may be only his guilty conscience. Knowing himself to be a traitor, he may have read the accusation in the other’s eyes.”

“The other being, I presume, Professor Moriarty.”

“No less! When any of that party talk about ‘He’ you know whom they mean. There is one predominant ‘He’ for all of them.”

“But what can he do?”

“Hum! That’s a large question. When you have one of the first brains of Europe up against you, and all the powers of darkness at his back, there are infinite possibilities. Anyhow, Friend Porlock is evidently scared out of his senses — kindly compare the writing in the note to that upon its envelope; which was done, he tells us, before this ill-omened visit. The one is clear and firm. The other hardly legible.”

“Why did he write at all? Why did he not simply drop it?”

“Because he feared I would make some inquiry after him in that case, and possibly bring trouble on him.”

“No doubt,” said I. “Of course.” I had picked up the original cipher message and was bending my brows over it. “It’s pretty maddening to think that an important secret may lie here on this slip of paper, and that it is beyond human power to penetrate it.”

Sherlock Holmes had pushed away his untasted breakfast and lit the unsavoury pipe which was the companion of his deepest meditations. “I wonder!” said he, leaning back and staring at the ceiling. “Perhaps there are points which have escaped your Machiavellian intellect. Let us consider the problem in the light of pure reason. This man’s reference is to a book. That is our point of departure.”

“A somewhat vague one.”

“Let us see then if we can narrow it down. As I focus my mind upon it, it seems rather less impenetrable. What indications have we as to this book?”

“None.”

“Well, well, it is surely not quite so bad as that. The cipher message begins with a large 534, does it not? We may take it as a working hypothesis that 534 is the particular page to which the cipher refers. So our book has already become a large book which is surely something gained. What other indications have we as to the nature of this large book? The next sign is C2. What do you make of that, Watson?”