"Well, I've thought of earthworks," said Charley; "they say they are the best fortifications."
"Against cannon, yes," said Ned; "but it's only because cannon can't batter them down as they can masonry. Our problem is a very different one, because our savages haven't any cannon. What we have got to do is not to make fortifications that can't be battered down by artillery, but to fence ourselves in in some way so that the negro squatters can't get at us."
"Well, what's your idea for that?" asked Charley.
"A stockade."
"Details?" queried Jack.
"My notion is," answered Ned, "to set a line of stockade around the camp, running it out into the water on each side, making a big 'C' of it. If we make it ten feet high and slope it outward, it will puzzle the squatters to get over it, and from the inside we can beat them off."
"But how shall we make the stockade?" asked Jack.
"Why, by digging a trench first, and setting timbers in it, sloping them at the proper angle, and filling in with earth."
"But couldn't a strong man pull a timber down by jumping up and hanging to it with his hands?" asked Charley.
"Perhaps so, if each timber stood alone," said Ned, "but we'll set a row of them in the ditch, and then roll a log in behind them before filling up. Then we'll set another row and roll in another log, and so on. Then, in order to pull down a post it will be necessary to lift the whole of the log that is behind it, together with all the earth that lies on top of the log, and that is more than any half dozen men can do."
"That's an excellent idea," said Jack, after thinking awhile, "but the job is too big to be completed to-day. We'd better follow my plan first, and make the stockade hereafter."
"What's your plan?"
"To build a sort of wall of timber around the camp. It isn't half so good as a stockade, because of course it is easily climbed over; but it is better than nothing, and will do for one night."
"But I don't see," said Charley, "that we can build a timber wall half so quickly as we can make the stockade. To do it we have got to cut enough logs to make a pile all around the camp, and that will take ten times as many logs as it will to make the stockade."
"That is true," said Jack, "and, besides, small timbers, five or six inches in diameter, will do as well for the stockade as big logs, and in the present state of our axe that is a consideration not to be despised. I surrender. Ned's plan is by odds the best one. Let's get to work at it, and if we don't finish it to-day, we'll patch up the deficiency in some way. Luckily we have digging tools."
The soil of the coast and islands of South Carolina is a light vegetable mould, mixed with sand, and below it there is sand only. There are no rocks, no stones, no pebbles even, and no stiff clay; and all this was greatly in the boys' favor. The trench grew very rapidly as they worked. Jack and Ned dug, while Charley, who was more expert with the axe than either of his companions, cut down small trees and trimmed them into shape for the stockade, making each about fourteen feet long, so that when set in the ditch it would project about ten feet above ground.
The digging of the ditch was the smallest part of the task. Its length, in order to enclose the hut, the well, and the boat, had to be about one hundred and fifty feet, so that a great many sticks of timber were necessary.
"We must set them about six inches apart," said Jack, "so as to use as few as we can at first. If necessary, we can fill in the gaps afterward; but a man can't get through a six-inch crack, and by setting them in that way each post, with its half of the two cracks, will occupy about a foot of space."
But to cut a hundred and fifty pieces of timber with a dull axe was no small job, and when night came on the boys had only twenty-five of them set up in their places, while as many more were ready for use. This was discouraging, and in their weariness Ned and Charley felt very much disheartened indeed. Jack alone kept his spirits up.
"It's very good work so far as it goes," he said, looking at the line of timbers all leaning outward from the camp, "and when we get it done it will puzzle all the squatters in South Carolina to take our fort."
"Yes, if we ever do get it done," said Charley, despondently.
"Now, Charley," said Jack, "none of that. We've been in a tighter place than this, and you especially ought not to be downhearted. You're ever so much better off than you were this time last night, when that darkey had you treed; and you're better off now than Ned is, with his game foot."
"Poor fellow," said Charley, looking at Ned as he limped into the hut with difficulty.
"The fact is," continued Jack, "we're tired out, and so things look blue to us, but they'll look better in the morning. You see we got no sleep last night, besides wearing ourselves out with anxiety and excitement, and we have worked like convicts all day. We'll feel better and brighter after we get some sleep, and things that look gloomy and discouraging now will look bright and hopeful enough to-morrow morning."
"That's true," said Ned, coming out of the hut again, "and it would be much better for us if we could quit work right now, and sleep for ten hours without waking, but we can't."
"Why not?" asked Charley, who was utterly worn out.
"Because we've some more work to do that must be done before we sleep," answered Ned. "What we have done for defence is of no good at all as it stands. We must have a barrier around the camp to-night."
"How shall we make one?" asked Jack.
"With brush. We have plenty of it already cut in the shape of the tree tops we've trimmed off in getting our stockade poles."
"Brush won't make a very good defence," muttered Charley.
"No, but it will be much better than no defence at all," replied Ned. "It isn't easy to climb over a well-packed brush pile, particularly if the brush is so laid that all the branches point outward, and that's the way we'll lay it. It won't take long to make a wall of that kind, and we can remove it little by little, as we set the poles hereafter."
This plan commended itself to Jack, and Charley submitted. Poor fellow, he was too weary to take any active interest even in plans for defence. The brushwood was brought and carefully placed in position. It was not sufficient to make a wall all the way around, but only a small gap was left near the water.
"Shall we cut more brush to-night, Jack?" asked Ned.
"No, I think we needn't. When we go to setting poles to-morrow, the brush we remove will do to close the gap with, and for one night we can watch so small an opening. We need rest and sleep now more than any thing else. You and Charley lie down. I'm the freshest one of the party, I think, and so I'll stand guard for a good while before calling either of you."
"Stand guard?" asked Ned; "what for?"
"Why, it won't do at all for all three to sleep at once. We might be attacked while asleep. If there were no danger of that we needn't have thought of a stockade at all."
Sleepy and tired as Ned and Charley were, they recognized the necessity for this watchfulness. It was very hard for the three weary fellows to take their turns at standing guard that night, but they did their duty. Jack took a long turn first, and Ned followed him, so that Charley got a good sleep of several hours, and was much refreshed before his period of watching began.
CHAPTER XVII
A NEW DANGER
The night brought its alarms with it. Every noise in the woods round about startled the alert sentinel, and there always are noises at night, not only in the woods but in houses also, as we all find out, when for any reason we are awake and on the alert. It seemed to each of the boys during this night, that there never were so many sounds which could not be explained: crackling noises, like those which are produced by the breaking of dry sticks under foot; sounds of footsteps, and of hard breathing; a thousand different sounds, in short, each of which seemed for the time being surely to indicate the stealthy approach of some foe.
Morning came at last, however, and no ill had befallen the camp. It was voted at breakfast that this day should be devoted exclusively to fortification, security being deemed of more pressing importance than escape from the island.
By steady persistence the work was carried forward until the line of tall, leaning pickets was more than half-way round the camp. This at least reduced the space to be watched through the night to less than half its former length, and as the night passed quietly with no sign of an enemy about, it was unanimously resolved, the next morning, that Sunday should be kept as a day of rest, the opinion being that the completion of the stockade could not now be called a work of necessity.
During Sunday night, however, the boys had reason to modify this opinion somewhat. About two o'clock Ned, who was on guard at the time, armed with a big club, awoke his companions, saying, in a whisper:
"Get up, quick! There's somebody about."
The two sleepers sprang to their feet quickly, and, seizing their clubs, joined Ned outside the hut.
By way of precaution the boys had cut a considerable number of short, thick, and very heavy clubs, which could be made to serve a good purpose as missiles. Thrown with violence from the hand they were likely to be of much greater service than stones or brickbats would have been, if such things had been at hand. Armed with these clubs the boys peered and listened. For a while they heard nothing. Then a low growl came from the bushes, and the sound of a sharp blow followed it immediately. Evidently one of the squatters was sneaking around the camp, and when his dog growled he struck it to secure silence.
The boys waited a long time but heard nothing more. Finally, in a low whisper, Ned said:
"There can't be more than one of them here."
"No, I suppose not," answered Jack, "but let's be quiet and see what he wants."
All became still again, and as the boys from their hiding-place could not be seen by any one in the bushes, the prowler had every reason to suppose that they were asleep. After perhaps an hour's waiting, Jack whispered: