“Shallow draughted ones only. But we have our own motor ship specially built and always running. It makes the round trip in about ten days.”
“By Jove!” Merriman said again. “Splendid! And is that where you live?”
He pointed to a house standing on a little hillock near the edge of the clearing at the far or down-stream side of the mill. It was a rough, but not uncomfortable-looking building of galvanized iron, one-storied and with a piazza in front. From a brick chimney a thin spiral of blue smoke was floating up lazily into the calm air.
The girl nodded.
“It’s not palatial, but it’s really wonderfully comfortable,” she explained, “and oh, the fires! I’ve never seen such glorious wood fires as we have. Cuttings, you know. We have more blocks than we know what to do with.”
“I can imagine. I wish we had ’em in London.”
They were walking not too rapidly across the clearing towards the mill. At the back of the shed were a number of doors, and opposite one of them, heading into the opening, stood the motor lorry. The engine was still running, but the driver had disappeared, apparently into the building. As the two came up, Merriman once more ran his eye idly over the vehicle. And then he felt a sudden mild surprise, as one feels when some unexpected though quite trivial incident takes place. He had felt sure that this lorry standing at the mill door was that which had passed him on the bridge, and which he had followed down the lane. But now he saw it wasn’t. He had noted, idly but quite distinctly, that the original machine was No. 4. This one had a precisely similar plate, but it bore the legend “The Landes Pit-Prop Syndicate, No. 3.”
Though the matter was of no importance, Merriman was a little intrigued, and he looked more closely at the vehicle. As he did so his surprise grew and his trifling interest became mystification. The lorry was the same. At least there on the top was the casting, just as he had seen it. It was inconceivable that two similar lorries should have two identical castings arranged in the same way, and at the same time and place. And yet, perhaps it was just possible.
But as he looked he noticed a detail which settled the matter. The casting was steadied by some rough billets of wood. One of these billets was split, and a splinter of curious shape had partially entered a bolt hole. He recalled now, though it had slipped from his memory, that he had noticed that queer-shaped splinter as the lorry passed him on the bridge. It was therefore unquestionably and beyond a shadow of doubt the same machine.
Involuntarily he stopped and stood staring at the number plate, wondering if his recollection of that seen at the bridge could be at fault. He thought not. In fact, he was certain. He recalled the shape of the 4, which had an unusually small hollow in the middle. There was no shadow of doubt of this either. He remained motionless for a few seconds, puzzling over the problem, and was just about to remark on it when the girl broke in hurriedly.