it, listened again and peered out. Having satisfied himself that there was no one in sight, he stooped to scrutinize the ground and finally went down on his hands and knees. Sure enough, there were four footprints that told the story much too plainly for safety: two diverging from the main track towards the gate and two more pointing directly towards it. Their existence was a little disquieting at the first glance, for they might already have been seen; but a close scrutiny of the ground for signs of any more recent footprints reassured him. Evidently Lewson was the last person who had trodden that path. Having established this encouraging fact, Pottermack, still keeping inside his gate, passed the rake lightly over the four footprints and then smoothed the surface with the broom.
His preparations were now nearly complete. Re-closing the gate, he went back to the workshop to prepare his outfit. For though the ‘sugaring’ expedition was but a pretext, he intended to carry it through with completely convincing realism. On that realism it was quite conceivable that his future safety might depend. Accordingly he proceeded to pack the large rucksack that he usually carried on these expeditions with the necessary appliances: a store of collecting-boxes, the killing-jar, a supply of pins, the folding-net, an air-tight metal pot which he filled with pieces of rag previously dipped into the sugaring mixture and reeking of beer and rum, and an electric inspection-lamp. When he had packed it, he laid the net-stick by its side and then turned his attention to the shoes.
The gutta-percha soles were now quite cold and hard. He dried them carefully with a soft rag, and as he did so, the little surrounding overlap caught his eye. It seemed to be of no consequence. It was very unlikely that it would leave any mark on the ground, unless he should meet with an exceptionally soft patch. Still, there had been no overlap on Lewson’s shoes, and it was better to be on the safe side. Thus reflecting, he took from the tool-rack a shoemaker’s knife, and having given it a rub or two on the emery board, neatly shaved away the overlap on each sole to a steep bevel. Now the impression would be perfect no matter what kind of ground he met with.
This was the finishing touch, and he was now ready to go forth. Slipping his arms through the straps of the rucksack, he picked up the net-stick, took down from a peg his working apron, tucked the shoes under his arm, switched off the light and went out, crossing the lawn direct to the side gate. Here he spread the apron on the ground, and, stepping on to it, listened for a few moments and then softly opened the gate. Having taken a cautious peep out to assure himself that there was no one in sight, he slipped on and fastened the over-shoes, and, taking the inspection-lamp from the rucksack, dropped the battery into his coat pocket and hooked the bull’s-eye into a button-hole. Then, throwing the light for an instant on the path and marking the correct spot by his eye, he stepped out sideways, planting his right foot on the smoothly swept ground a pace in front of the last impression of Lewson’s left foot.
Steadying himself with the net-stick, he pulled the gate to until the latch clicked; then he put down his left foot a good pace in advance and set forth on his pilgrimage, carefully adapting the length of his stride to match, as well as he could judge, that of his long-legged predecessor.
The country was profoundly quiet, and, though the moon peeped out now and again, the night was for the most part so dark that he had occasionally to switch on his lamp to make sure that he was keeping to the path. The state of affairs, however, that these occasional flashes revealed was highly encouraging, for though the beaten surface of the path showed numerous traces of human feet, these were mostly faint and ill-defined, and none of them looked very recent. They suggested that few wayfarers used this path, and that the very striking tracks that he was laying down might remain undisturbed and plainly visible for many days unless a heavy rain should fall and wash them away.
So Pottermack trudged on, stepping out with conscious effort and keeping his attention fixed on the regulation of his stride. About half a mile from home the path entered a small wood, and here the aid of the lamp was needed continuously. Here, too, the sodden state of the path caused Pottermack to congratulate himself on his wise caution in shaving off the overlaps. For in this soft earth they would have shown distinctly and might have attracted undesirable notice—that is, if any one should give the footprints more than the passing glance that would suffice for recognition; which was in the highest degree unlikely.
Presently the path emerged from the wood and meandered across a rough common, covered with gorse and heather. Eventually, as Pottermack knew, it joined, nearly at a right angle, a by-road, which in its turn opened on the main London road. Here, he decided, the tracks could plausibly be lost; and as he drew near to the neighbourhood of the by-road he kept a sharp lookout for some indication of its whereabouts. At length he made out dimly a gate which he recognized as marking a little bridge across the roadside ditch. At once he stepped off the path into the heather, and, after walking on some twenty paces, halted, and unfastening the over-shoes, slipped them off. Then he took off the rucksack, turned out its contents, and having stowed the shoes at the bottom, repacked it and put it on again.
Hitherto he had not met or seen a soul since he started, and he was rather anxious not to meet any one until he was clear of this neighbourhood. His recent activities had perhaps made him a little over-conscious. Still, this was the night of the disappearance and here the tracks faded into the heather. If he were seen hereabouts, he might hereafter be questioned as to whether he had seen the missing man. No great harm in that, perhaps; but he had the feeling that it were much better for him not to be associated with the affair in any way. There were all sorts of possible snags. For instance, how did he get here without leaving any footprints on the path by which he would naturally have come? From which it will be seen that, if conscience was not making a coward of Mr. Pottermack, it was at least a little unduly stimulating his imagination. And yet it was as well to err on the right side.
Turning back, he strode on through the heather until he came once more to the path, which he crossed by a long jump that landed him in the heather on the farther side. He now struck across the common, making for a detached coppice that formed an outlier of the wood. As soon as he reached it he fell to work without delay on the completion of his programme, pinning the pieces of sugared rag on the trunks of half a dozen trees. Usually he gave the moths ample time to find the bait and assemble round it. But tonight, with that incriminating pair of shoes in his rucksack, his methods were more summary. By the time that he had pinned on the last rag, one or two moths had begun to flutter round the first, easily visible in the darkness by the uncanny, phosphorescent glow of their eyes. Pottermack unfolded his net, and, screwing it on to the stick switched on his lamp and proceeded to make one or two captures, transferring the captives from the net to the killing-jar, and, after the necessary interval, thence to the collecting-boxes.
He was not feeling avaricious tonight. He wanted to get home and bring his task definitely to an end. He was even disposed to resent the indecent way in which the moths began to swarm round the rags. They seemed to be inviting him to make a night of it, as they were doing amidst the fumes of the rum. But he was not to be tempted. When he had pinned a dozen specimens in his collecting-box and put a few more in the lethal jar, he considered that he had done enough to account plausibly for his nocturnal expedition. Thereupon he packed up, and, leaving the lepidopterous revellers to the joys of intoxication, he turned away and strode off briskly in the direction of the by-road, carrying the net still screwed to the stick. A few minutes’ rough walking brought him to the road, down which he turned in the direction of the town. In another ten minutes he reached the outskirts of the town and the road on which his house fronted. At this late hour it was as deserted as the country; indeed in its whole length he encountered but a single person—a jovial constable who greeted him with an indulgent smile as he fixed a twinkling eye on the butterfly net, and, having playfully enquired what Mr. Pottermack had got in that bag, hoped that he had had good sport, and wished him good-night. So Pottermack went on his way, faintly amused at the flutter into which the constable’s facetious question had put him. For if it had chanced that the guardian of the law had been a stranger and had insisted on examining the bag, nothing could have been more apparently innocent than its contents. But the guilty man finds it hard to avoid projecting into the minds of others the secret knowledge that his own mind harbours.
When Pottermack at last let himself in at his front door and secured it with bolt and chain, he breathed a sigh of relief. The horrible chapter was closed. Tomorrow he could clear away the last souvenirs of that