"How do they account for it?" "They shuffled and lied--said that they found it on the moor on Tuesday morning. They know where he is, the rascals! Thank goodness, they are all safe under lock and key. Either the fear of the law or the Duke's purse will certainly get out of them all that they know." "So far, so good," said Holmes, when the doctor had at last left the room. "It at least bears out the theory that it is on the side of the Lower Gill Moor that we must hope for results. The police have really done nothing locally, save the arrest of these gipsies. Look here, Watson! There is a watercourse across the moor. You see it marked here in the map. In some parts it widens into a morass. This is particularly so in the region between Holdernesse Hall and the school. It is vain to look elsewhere for tracks in this dry weather; but at _that_ point there is certainly a chance of some record being left. I will call you early to-morrow morning, and you and I will try if we can throw some little light upon the mystery." The day was just breaking when I woke to find the long, thin form of Holmes by my bedside. He was fully dressed, and had apparently already been out. "I have done the lawn and the bicycle shed," said he. "I have also had a ramble through the Ragged Shaw. Now, Watson, there is cocoa ready in the next room. I must beg you to hurry, for we have a great day before us." His eyes shone, and his cheek was flushed with the exhilaration of the master workman who sees his work lie ready before him. A very different Holmes, this active, alert man, from the introspective and pallid dreamer of Baker Street. I felt, as I looked upon that supple figure, alive with nervous energy, that it was indeed a strenuous day that awaited us. [Illustration: SKETCH MAP SHOWING THE LOCALITY.] And yet it opened in the blackest disappointment. With high hopes we struck across the peaty, russet moor, intersected with a thousand sheep paths, until we came to the broad, light-green belt which marked the morass between us and Holdernesse. Certainly, if the lad had gone homewards, he must have passed this, and he could not pass it without leaving his traces. But no sign of him or the German could be seen. With a darkening face my friend strode along the margin, eagerly observant of every muddy stain upon the mossy surface. Sheep-marks there were in profusion, and at one place, some miles down, cows had left their tracks. Nothing more. "Check number one," said Holmes, looking gloomily over the rolling expanse of the moor. "There is another morass down yonder and a narrow neck between. Halloa! halloa! halloa! what have we here?" We had come on a small black ribbon of pathway. In the middle of it, clearly marked on the sodden soil, was the track of a bicycle. "Hurrah!" I cried. "We have it." But Holmes was shaking his head, and his face was puzzled and expectant rather than joyous.