Stealthily climbing out of the hiding-place again, he waited till a sudden roar, as the train ran over a small culvert, gave him an opportunity to open the door and slip out of the van.
Clinging to the rail, he made his way along the footboard, stretched across to the truck in front, and soon had the satisfaction of finding himself sitting on top of a truck-load of fine coal.
But Jack’s surprises were not ended by any means, for as he went on all-fours to creep into a safer position, there was a sudden tearing sound, and one leg went deep down through the coal, to be followed instantly by the other. Next moment he was standing on the wooden flooring of the truck, with a layer of coal round his middle, while, strangely enough, his legs were quite free to move about.
Jack was as sharp as most lads of his age, and though he could not exactly see through a brick wall, he could certainly, now that suspicion had sharpened his wits, get to the bottom of this new discovery.
With the greatest care he swept the coal aside till he came to a tarpaulin some five inches beneath it, which was evidently stretched across the truck. Through this he had already forced a hole, and he had soon completely disappeared beneath it, and, nothing daunted by the novelty or danger of the situation, had begun to grope about in the dark. From end to end of the truck he crawled, going over every inch of the space, and when his inspection was finished he had counted two more big guns of some description, besides a vast number of Mauser rifles.
“Ah, this is really serious!” he muttered gravely to himself. “A van-load of grapes, which are really cartridges, for President Kruger, and a truck-load of coal, hiding no end of guns, not to mention those hidden by the cases of grapes. And I suppose the other trucks in front are just the same. I wonder now where they are going to! I’d very much like to find out; but just now, if I want to see the Hunters again, I had better get back to my own carriage.”
Jack popped up through the hole again, and was on the point of moving along the top of the coal when, with a shriek and a deafening roar the train dived into the long tunnel which connects Natal and the Transvaal. To attempt to move now would have been to run the chance of having his brains knocked out against the arch above, for the coal-van was one with sides of sheet-iron, built very much higher than those usually seen on our English railways. He therefore lay down flat upon the thin layer of coal, taking good care to spread his weight over as much surface as possible. Five minutes later the train emerged from the tunnel and rushed out into the open. Once more Jack crawled to the side of the truck, and having worked his way to the foremost end of it, clambered over on to the buffer, and from there on to the next truck.
“Now I shall be able to get along far more quickly,” he thought. “But first of all I will try the weight of one of these cases labelled ‘Sugar’. Ah, I thought as much! this one is so heavy that I can scarcely lift it.”
Stumbling along on top of the cases, he tried first one and then another, till he was convinced that here again he had hit upon a large consignment of war material of some sort. For if it was not ammunition, or something of that nature, what could it be? And why should the cases be labelled ‘Sugar’? Obviously it was extremely likely that all the trucks were loaded with war material, for otherwise why the secrecy and incorrect labelling?
Satisfied that he had discovered a secret of the Boers, Jack scrambled from truck to truck on his way back to his carriage.