Apparently the oak did not meet his requirements, for he stepped out and looked up and down the avenue. Then, beyond the elm, he caught sight of an ancient pollard hornbeam—a strange, fantastic tree whose trunk widened out trumpet-like above into a broad crown, from the edge of which multitudinous branches uprose like the limbs of some weird hamadryad.

That tree he approved at a glance, but he lingered behind the oak until the postman, returning with brisk step and cheerful whistle, passed down the avenue and left him once more in solitude. Then he moved on with a resolute air to the hornbeam.

The crown of the trunk was barely six feet from the ground. He could reach it easily, as he found on trying. Standing the cane against the tree—ferrule downwards, this time—he took the brush-case from the bag, pulled off the lid, and, with the crucible-tongs, lifted out the knife and laid it on the crown of the tree, just out of sight, leaving the tongs—also invisible—still grasping the knife. He was about to replace the brush-case in the bag, when he appeared to alter his mind. Sniffing at it, and finding it reeking with the sickly perfume, he pushed the lid on again and threw the case up into the tree, where he heard it roll down into the central hollow of the crown. Then he closed the bag, and, taking the cane by its handle, moved slowly away in the direction whence he had come, passing out of the avenue between the elm and the oak.

His mode of progress was certainly peculiar. He walked with excessive slowness, trailing the cane along the ground, and every few paces he would stop and press the ferrule firmly against the earth, so that, to any one who should have observed him, he would have appeared to be wrapped in an absorbing reverie.

Thus he moved on across the fields, not, however, returning to the high road, but crossing another stretch of fields until he emerged into a narrow lane that led out into the High Street. Immediately opposite to the lane was the police station, distinguished from the adjacent cottages only by its lamp, its open door and the notices pasted up outside. Straight across the road Pembury walked, still trailing the cane, and halted at the station door to read the notices, resting his cane on the doorstep as he did so. Through the open doorway he could see a man writing at a desk. The man’s back was towards him, but, presently, a movement brought his left hand into view, and Pembury noted that the forefinger was missing. This, then, was Jack Ellis, late of the Civil Guard at Portland.

Even while he was looking the man turned his head, and Pembury recognized him at once. He had frequently met him on the road between Baysford and the adjoining village of Thorpe, and always at the same time. Apparently Ellis paid a daily visit to Thorpe—perhaps to receive a report from the rural constable—and he started between three and four and returned between seven and a quarter past.

Pembury looked at his watch. It was a quarter past three. He moved away thoughtfully (holding his cane, now, by the middle), and began to walk slowly in the direction of Thorpe—westward.

For a while he was deeply meditative, and his face wore a puzzled frown. Then, suddenly, his face cleared and he strode forward at a brisker pace. Presently he passed through a gap in the hedge, and, walking in a field parallel with the road, took out his purse—a small pigskin pouch. Having frugally emptied it of its contents, excepting a few shillings, he thrust the ferrule of his cane into the small compartment ordinarily reserved for gold or notes.

And thus he continued to walk on slowly, carrying the cane by the middle and the purse jammed on the end.

At length he reached a sharp double curve in the road whence he could see back for a considerable distance; and here opposite a small opening, he sat down to wait. The hedge screened him effectually from the gaze of passers-by—though these were few enough—without interfering with his view.