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Lying down, they took in all the details of the construction through their glasses, and then, choosing their ground so that they could not be seen by any on the bridge, they kept on until they were able to obtain a view from a distance of a quarter of a mile. The examination that was now made was by no means of a satisfactory nature. Near the bridge there were sidings on which several lines of loaded trucks stood. An engine was at work shunting. At least a score of natives were at work under the direction of Portuguese, while several men, who were by their dress evidently Boers, were pointing out to the officials the trucks they desired to be first forwarded. Three or four of these carried huge cases, two of them being each long enough to occupy two trucks.
"There is no doubt those are guns," Chris said. "If we can do nothing else, we can work a lot of damage here, which will be some sort of satisfaction after our long ride. As to our main object, things don't look well."
Half a dozen armed Boers could be made out stationed at the Portuguese side of the bridge, and as many more at the opposite end. Two lately-erected wooden huts, each of which could give shelter to some fifty men, stood a short distance beyond the bridge, and it was evident by the figures moving about, and a number of horses grazing near, that a strong party was stationed there to furnish guards for the bridge.
"I am afraid we cannot do it," Peters said, after their glasses had all been fixed on the bridge for several minutes; "at least, I don't see any chance. What do you say, Chris?"
"No, I am afraid there is none. If we were to crawl up to them to-night and shoot down all at this end of the bridge, we should be no nearer. You see, there are a line of huts on this side, and two or three better-class houses. No doubt the railway officials and natives all live there; they would all turn out when they heard the firing, and the Boers would come rushing over from the other side. It would be out of the question for us to carry forward those four boxes to the middle of the bridge, plant them over the centre of the girders, and light the fuses. A quarter of an hour would be wanted for the business at the very least, and we should not have a minute, if there is as good a guard by night as there is by day. It is likely to be at least as large, perhaps much more than that. The thing is impossible in that way. However, of course we can crawl up close after dark and satisfy ourselves about the guard.
"If it is not to be managed in that way, we must go down to the river bank and see whether there is anything to be done with one of the piers. If that is not possible, we must content ourselves with smashing things up generally on this side. Several of the trucks look to me to be full of ammunition, and there are eight with long cases which are no doubt rifles. We all remember that terrific smash at Johannesburg, and though I don't say we could do such awful damage as there was there—for there were I don't know how many tons of dynamite exploded then, I think about fifty—still, it would be a heavy blow. Any amount of stores would be destroyed, some thousand of rifles, and, for aught I know, all those waggons with tarpaulins over them are full of cartridges. However, the bridge is the principal thing. We will stop here for an hour or two and examine every foot of the ground, so as to be able to find our way in the dark. We need not mind about the trucks now, we can examine their position to-morrow if we have to give up the idea of the bridge."
On returning to their horses they had a long talk. Chris was deeply disappointed, but the others, who had never quite believed that his scheme could be carried out, were greatly delighted at the knowledge that at any rate they might be able to do an immense deal of damage to the enemy. As soon as it became quite dark, they set out again; they did not take their rifles with them, but each had his brace of revolvers. They had no intention of fighting, except to secure a retreat. Before starting, each had wound strips of flannel round his boots, so that they could run noiselessly. Brown had in the first place suggested that they should take their boots off, but Chris pointed out that if they had to run in the dark, one or other of them was sure to lame himself by striking against a stone or other obstacle. There were several large fires in the shunting yard, and at each end of the bridge, and at the Boer barracks. Crawling along on their hands and knees they were completely in the shade, and managed to get within some twenty or thirty yards of the Boers, who were sitting smoking and talking. They were all evidently greatly satisfied with news that they had heard during the day. Listening to their talk, they gathered something of what had happened since they left Estcourt. Colenso had been evacuated by us, an armoured train coming up from Estcourt had been drawn off the line, and most of the soldiers with it had been killed or captured. The last news was that the British had sallied out from Estcourt, which was now surrounded, and had attacked the Boers posted in a very strong position near a place called Willow Grange, but had been repulsed, principally by the artillery, with, it was said, immense loss. This was not pleasant hearing for the listeners. The Boers then had a grumble at being kept so far away from the fighting. It was not that they were so anxious to be engaged, as to get a share of the loot, as it had been reported that something like twenty thousand cattle and horses had been driven off from Natal.
Then their conversation turned upon a point still more interesting to the listeners. A commando had started from Barberton, a border town some thirty or forty miles to the west, into Swaziland. A native had mentioned to one of the Boers there that four Englishmen had passed north. They had stopped at his chief's kraal. They were all quite young, and had five natives with them, and three pack-horses. They had come to shoot and see the country, they said; but they had spoken with one of the men with them, who said that so far they had not done much hunting, only enough for food; he supposed that they were going to begin further on. The Boer had an hour later ridden down to Barberton with the news, and it had been at once resolved to send off a commando of a hundred men to search the hills, for there was a suspicion that the hunters were British officers who had come up to act as spies.
"Our cornet had a telegram this afternoon," one of them said, "that we were to be specially vigilant here, and we must keep a sharp lookout at night. I don't suppose they are on this side of the river. They may be going to pull up the railway, or blow up a culvert somewhere between this and Barberton. Four men with their Kaffirs might do that, but they certainly could not damage this bridge."
At ten o'clock most of the party retired into a small shed a few yards away, but two remained sitting by the fire, and were evidently left on guard, for they kept their rifles close at hand. The lads now crawled away some distance, and then made their way down a steep bank to the river. It was a stream of some size, running with great rapidity, and it did not take them long to decide that it would be impossible to swim out with the cases and place these in such a situation that the explosion would damage the structure. They then moved quietly up to the spot where the end of the last span touched the level ground; it rested upon a solid wall built into the rock, and ran some forty feet above their heads. They were now just under where the Boers were sitting, could hear their voices, and see the glow of their fire. They were unable to make out the exact position of the girders, but they had, when watching it, obtained a general view of the construction.
It consisted of two lines of strong girders on each side, connected by lattice bars, with strong communications between the sides at each pier. The depth of the girders was some twenty feet. After cautiously feeling the wall and finding that there were no openings in which their explosives could be placed, they crawled away noiselessly, ascended to the bank again a couple of hundred yards from the bridge, and returned to their camping ground. They observed as they went that there were still fires burning in the station yard, that some Kaffirs were seated near these, and as, in the silence of the night, a faint sound could be heard like that of a distant train, they had no doubt that they were waiting up for one to arrive. Indeed, before they had reached the camping place they saw a train pass by. It had no lights save the head-lights and that of the engine fire, and they therefore had no doubt that it was another train with stores.
When they reached their tents they had a long consultation. No fire had been lighted. The horses had been taken some way up a little ravine down which a stream of water trickled; here the four natives had taken up their post. These had only come down in the middle of the day to fetch their food, which Jack cooked over the spirit stove. This was alight when the lads returned, but was carefully screened round by blankets so that not the slightest glow could be seen from a distance.
"What do you think of it, Chris?" Brown said.
"I don't know what to think about it. I have no idea what effect dynamite would have when exploded at a distance of thirty or forty feet below a bridge. Certainly it would blow the roadway up, but I have very great doubts whether it would so twist or smash the main girders as to render the bridge impassable. The distance to the first pier is not great, and unless one entirely destroyed the bridge, I should say that it could be repaired very soon—I mean, in a week or two—by a strong gang. If the girders kept their places, two or three days' work might patch it up temporarily. If it were destroyed altogether as far as the first pier, it would stop the cannon getting over till a temporary bridge is constructed; but by rigging up some strong cables, they could pass cases of musket ammunition across the gap in the same way, you know, as I have seen pictures of shipwrecked people being swung along under a cable in a sort of cradle. What do you think, Peters?"
"Two hundred pounds of dynamite would do a lot of damage, Chris. I should think that it would certainly bring the wall down."
"I have no doubt that it would do that, Peters, but the ironwork goes some ten yards farther, and no doubts rests on the solid rock. I expect the wall is put there more to finish the thing off than to carry much of the weight. Again, you see it is only a single line, and not above ten feet wide, which is against us, for the wider the line the better chance it has of being smashed by an explosion some forty feet below it. Well, we will have another look at the bridge and the waggons to-morrow. Of course the bridge is the great thing if it can be managed, though I don't say that blowing up the yard would not be a good thing if we can't make sure of the other. Anyhow, we need not feel down-hearted about it. We came up here on the chance, and even though we may not be able to do exactly what we want, we ought to manage to do them a lot of damage."
After eating their supper they turned in to their two little tents. The spirit-lamp had been extinguished, and as they had not the least fear of discovery, they did not consider it necessary to place a sentinel. In the morning they were out again early and at their former post of observation.
"What are they up to now?" Brown said an hour later when he saw a party of Boers come down the opposite side close to the bridge, carrying posts and planks.
Chris made no answer, he was watching them intently. They stopped near the bank of the river close to the bridge. Then some of them set to work to level a space of ground, while others made holes at the corners.
"I am afraid that it is all up with our plans as far as the bridge is concerned. They are going to put up a hut there, and I have not the least doubt it means they are going to station a guard under the bridge. If they do it that side, they are probably doing the same on this, only we can't see them. The Boers are stupid enough in some things, but they are sharp enough in others, and it is possible that the commando from Barberton has come upon one of the kraals where we slept, and asking a lot of questions about us, they have found out that we had four heavy boxes with us, and the idea may have struck them that these contained explosives. If that did occur to them, it is almost certain that a man has been sent off at once to Barberton with orders to telegraph here and to other bridges, to take every precaution against their being blown up. Anyhow, there is a hut building there, and I don't see that it can be for any other purpose."
After three hours' work the hut was completed, and a party of eight men brought down blankets and other kit. Two of these at once ascended the bank with their rifles and sat down at the foot of the wall.
"That ends the business," Chris said. "However, I will creep round to a point where I can get a view of this side of the bridge. Possibly they have only taken precautions on their own side, for we were travelling for some time in the Swazis' country to the west of the Komati, and that is where they will have heard of us." He crawled away among the rocks, and rejoined his companions an hour later.
"It is just the same this side. They have settled the question for us.
Now we will give our attention to the waggons."
CHAPTER X
AN EXPLOSION
Having given up all hopes of blowing up the bridge, Chris and his comrades turned their whole attention to the lines of waggons. The train that had come in on the previous evening had added to the number, although it had taken some of them away with it up country. They now made out that there were eight waggons piled with cases, that almost certainly contained rifles; six with tarpaulins closely packed over them, and these they guessed contained ammunition boxes; four, each with two large cases that might contain field guns; while the two with what they were sure were big guns still remained on the siding.
"I should say that about four or five pounds of dynamite would be an abundance for each of those ammunition waggons; less than that would do, as we could, by slitting the tarpaulins, put a pound among the cases, and if one case were exploded it would set all the others off. There is no trouble about them. I will just take a note. They are on the second siding; there are eight other waggons in front of them and six behind, so we cannot make any mistake about that. There must be a good heavy charge under the rifle trucks, for we shall have to blow them all well into the air to bend and damage them enough to be altogether unserviceable. As for the guns, and especially the heavy ones, it is a difficult question. Of course, if we could open the cases and get at the breech-pieces, and put dynamite among them, we could damage all the mechanism so much that the guns would be useless until new breech-pieces were made, which I fancy must be altogether beyond the Boers; but as there is no possibility of opening them, we must trust to blowing the guns so high in the air that they will be too much damaged for use by the explosion and fall. We have got altogether two hundredweight; now two pounds to each ammunition waggon will take twelve pounds. What shall we say for the rifles?"
"Ten pounds," Brown suggested.
"That would take eighty more pounds," Willesden objected, "which would make a big hole in our stores."
"We must have a good charge," Chris said. "Suppose we say nine pounds to each, that will save eight pounds; fifteen pounds apiece ought to give the eight cases which we suppose hold field-guns a good hoist; that will leave us with over a hundred pounds, fifty for each of the big guns. Now that we have seen all that is necessary, we may as well be off and begin to get ready."
The covers were taken off the boxes of dynamite, and these were unscrewed, and the explosive was with great care divided into the portions as agreed upon. Two of the cases furnished just sufficient for the ammunition waggons and the two big guns, the other two for the smaller cannon and the trucks with the rifles. The charges were sewn up in pieces of the canvas, the smaller charges for the ammunition boxes being enclosed in thinner stuff that had been sewn under the canvas used in packing; the fuses and detonators were then cut and inserted. Chris was perfectly up in this work, having performed the operation scores of times in the mines. The length it should burn was only decided after a discussion.
There would be in all nineteen charges to explode, and these were in three groups at some little distance from each other, all the cannon being on the same siding. It would be necessary, perhaps, to wait for some time till all these were free from observation by natives or others who might be moving about the yard, then a signal must be given that they could all see. It would not take long to light the fuses, for each of them would be provided with a slow match, which burns with but a spark, and could be held under a hat or an inverted tin cup till the time came for using it. The question was how far must they be away to ensure their own safety, and Chris maintained that at least four or five hundred yards would be necessary to place them in even comparative safety from the rain of fragments that would fall over a wide area. Finally it was agreed to cut the fuses to a length to burn four minutes; this would allow a minute for any hitch that might occur in lighting them, and three minutes to burn. It was of course important that they should be no longer than was absolutely necessary, as there existed a certain risk that one of the little sparks might be seen by a passing Kaffir, or, as was still more probable, the smell of burning powder should attract attention. It was agreed that Chris should light the fuses at the cannon, which were farthest from the others, that Peters should see to the six rifle trucks, and Willesden and Brown attend the eight trucks with the ammunition, one to begin at each end of the line.
When each had finished his work, he was to run straight away in the direction of the encampment, and all were to throw themselves down when they felt sure that the time for the explosions had arrived. As soon as all was over they were to meet at their place of encampment. Tents and all stores were to be removed before the work began to the ravine where the horses were, the men with them being charged to stand at the animals' heads, as there would be a great explosion, and the horses might break loose and stampede. The matter that puzzled them the most was how, when they reached their respective stations—separated from each other by lines of waggons, and in some cases by distances of a couple of hundred yards—they were to know when the work of lighting the fuses was to begin. It could not be done by sound, for this would reach the ears of any awake in the yard or the sentries at the bridge. Chris at last suggested a plan.
"When we start, Jack shall be stationed at a point on the hillside high enough for us to see him from all points of the yard. We will show him the exact spot while it is light. When we start he shall go down with us to the edge of the yard, and as we separate will turn and go up to the point we had shown him. He will be ordered to walk up quietly, and not to hurry; that will give us ample time to get to our stations before he reaches his. We must all keep our eyes fixed on that point. He will take the dark lantern with him; when he gets there he must turn the shade off, so as to show the light for a quarter of a minute. That will be our signal to begin. It is most unlikely that anyone else will see it, but even if they did they would simply stare in that direction and wonder what it was. Of course, only a flash would be safer; but some of us might not see it, and would remain waiting for it until the other explosions took place."
All agreed that this would be a very good plan. Chris crawled up with Jack until he reached a spot where he commanded a perfect view of the yard, and explained to him exactly what he was to do. He had already been told what was going to take place. Knowing that the Kaffirs have very little idea of time, he said: "You will hold it open while you say slowly like this, 'I am showing the light, baas, and I hope that you can all see it.' You will say that over twice and then turn off the light, and lie down under that big rock till you hear the explosion. Wait a little, for stones and fragments will come tumbling down. When they have stopped doing so make your way straight to where the horses are; you will find us there before you. Now, repeat over to me the words you are to say slowly twice."
Jack did so, and finding on questioning him that he perfectly understood what he was to do, Chris went back with him to the encampment, where they remained quietly until the sun set and darkness came on. Then, according to arrangement, the four natives came in and carried all the things back to the ravine, and laid them down ready to pack the horses as soon as their masters returned.
The day passed slowly to the lads. All were in a state of suppressed excitement, an excitement vastly greater than they had felt during their two fights with the Boers.
"How they will wonder who did it when they hear the news down in
Natal!" Peters said.
"I don't expect they will hear much about it," Chris said. "You may be sure the Boers will not say much; they make a big brag over every success, but they won't care to publish such a thing as this. Probably their papers will only say: 'An explosion of a trifling nature occurred on the Portuguese side of Komati-poort. Some barrels of powder exploded; it is unknown whether it was the result of accident or the work of spies. Due precaution will be taken to prevent the recurrence of the accident. Beyond a few natives employed at the station, no one was hurt.'"
The others laughed. "I suppose that will be about it, Chris. However, I have no doubt that that commando from Barberton will keep a very sharp look-out for us as we go back."
"Yes, but they won't catch us. We won't venture into Swaziland again, but will make our way down on the Portuguese side, following the railway till we are fairly beyond the mountain range. We can ride fast now that we have got rid of the dynamite. It will be some time before they get the news about what has happened here, for the telegraph wires are sure to be broken and the instruments smashed. I really think that our best way will be to ride straight down to Lorenzo Marques. When we get there we can very well state that we had been ordered to leave Johannesburg, and that, as the trains are so slow and so crowded with fugitives, we had ridden down. I don't suppose that we shall attract the least notice, for we know that a great many of those who had intended to stay have been ordered off. That way we shall get back to Natal in a few days and avoid all danger." The others agreed that this would be a capital plan; and the distance by the road, which they had crossed a few miles to the south, and which runs from Lorenzo Marques up to Ladysdorp and the Murchison and Klein Lemba gold-fields, would not be above seventy miles. They would wait till daybreak showed them the amount of damage that had been done, and then start, and would be down at Lorenzo Marques in the evening, when, even if the news of the explosion reached the town, the Boers' suspicions that some Englishmen were in the hills, and that it was probably their work, would not be known. Not until ten o'clock was a move made. Then they took up the packages of dynamite, and, accompanied by Jack, made their way noiselessly down to the railway yard.
Here they separated. Chris, aided by Jack, carried the big packets for the large guns and for the eight smaller ones. They met no one about, and depositing their packages in the right position under them—the fuses had been already inserted—they returned to the spot they had left. In a minute or two they were joined by the others. Peters had placed his parcels under the eight trucks with rifles; Willesden and Brown had cut holes in the tarpaulins of the ammunition trucks, and thrust down their charges well among the boxes. All was ready. While the others stood closely round him Jack opened the lantern just widely enough for them to light their slow matches.
"Now, you are not to hurry back to the place, Jack; we shall all be on the look-out for you by the time you get there. You know your instructions; you are to turn round, open the slide of the lantern, say the words I told you over twice slowly, then shut the lantern and get under that great boulder lying against the rock. You will be perfectly safe in there."
"I understand, baas," he said, and at once turned and went off. The others hurried to their respective posts, and then turned round and gazed at the spot where the light would be shown. In their anxiety and excitement the time seemed interminable, and each began to think that the native had somehow blundered; at last the light appeared, and they turned at once to their work. Half a minute sufficed to light the fuses, and then they hurried away cautiously until past all the waggons, and then at full speed along the hillside, their thickly-padded shoes making no noise upon the rocks. Knowing that they were sure to be confused as to the time, they had calculated before the sun had set how far they could run in three minutes, which should be, if all went well, the time they would have after leaving the yard. They thought that even on the rough ground, and in the dark, they could make a hundred and fifty yards a minute, and at about four hundred and fifty from the waggons there was a low ridge of rock behind which they would obtain protection from all fragments blown directly outwards.
Chris was the first to arrive, for the trucks with the cannon were those farthest away from the bridge, and he was able to run for some distance along the line before making for the elope, and therefore travelled faster than his companions, who had farther to run on broken ground. In half a minute they rushed up almost together.
"Throw yourselves down," Chris shouted; "we shall have it directly."
Twenty seconds later there was a tremendous roar and a blinding crash, and they felt the ground shake. Almost simultaneously came eight others, then in quick succession followed six other reports, and mingled with these a confused roar of innumerable shots blended together. There was a momentary pause, and then a deafening clatter as rifles, fragments of iron and wood came falling down over a wide area. Several fell close to where the lads were crouched against the rock, but none touched them. For a full half-minute the fragments continued to fall, then the boys stood up and looked round. It was too dark to see more than that the yard was a chaos; the long lines of waggons, the huts and buildings, had all disappeared; loud shouts could be heard from the other side of the bridge, but nearer to them everything was silent. There was no doubt that the success of the attempt was complete, and the lads walked back quietly until they were at the spot where the horses had been placed, Jack overtaking them just as they reached it.
"It was terrible, baas," he said in an awed voice. "Jack thought his life was gone. Things fell on the rock but could not break it."
"Nothing short of one of those big cannon would have done that, Jack.
Well, we shall see in the morning what damage is done."
The four natives, although they had been warned, were still terribly frightened. The horses had at the first crash broken away and run up the ravine, but they had just brought them down again, still trembling and lathering with fear. For some minutes the boys patted and soothed them, and accustomed to their voices and caresses they gradually quieted down, but were very restless until day began to break. The boys had no thought of sleep. The lamp was lit and tea made, and each of the Kaffirs was given a glass of spirits and water, for they had brought up a bottle with them in case of illness or any special need; and it was evident from their chattering teeth and broken speech that the natives needed a stimulant badly. Before it became light the horses were saddled, and the five natives told to take them along the hill a mile farther. When they had seen them off the lads returned to their former post above the station. They had several times, when they looked out during the night, seen a great light in that direction, and had no doubt that some of the fallen huts had caught fire.
Prepared as they were for a scene of destruction, the reality far exceeded their expectations. All the waggons within a considerable distance of the explosions were smashed into fragments, their wheels broken and the axles twisted. The ammunition trucks had disappeared, and many close to them had been completely shattered. Those in which the muskets had been were a mere heap of fragments; the rest of the trucks lay, some with their sides blown in, others comparatively uninjured. Some were piled on the top of others three or four deep; their contents were scattered over the whole yard. Boxes and cases were burst open, and their contents—including large quantities of tea, sugar, tinned provisions in vast quantities, and other stores—ruined.
Some still smoking brands showed where the huts had stood, and the dead bodies of some twenty natives and several Portuguese officials, were scattered here and there. The bodies of eight Boers were laid out together by the bridge, and forty or fifty men were wandering aimlessly amid the ruins. A huge cannon stood upright nearly in the centre of the yard. It had fallen on its muzzle, which had penetrated some feet into the earth. They could not see where its fellow had fallen. Five others, which looked like fifteen-pounders, were lying in different directions, the other three had disappeared. Rifles twisted, bent, and ruined were lying about everywhere.