"We must do our best to throw the beggars off the scent," he said. "If we rig up barbed wire round our new camp, they'll imagine we're merely on the defensive, and the longer we keep up that illusion, the better."

"I agree," said Warrender. "There can't be the slightest doubt now that something is going on on the island that they'll stick at nothing to prevent our discovering. We've got to make them believe we can't see farther than the ends of our noses, so we must keep quiet, pretend we think the fire was caused by our cigarettes--anything to put them off their guard. But, of course, we must take the first opportunity of making another search in the ruins. It's as plain as a pikestaff that that moaning sound is artificial; that is to say, they've got some sort of an instrument rigged up that catches the wind just when they wish, and only then. And that signal must have something to do with their schemes; I'm inclined to think you're mistaken, Armstrong, and it's not S.O.S. at all."

"Perhaps," replied Armstrong.

"I stick to it that Molly Rogers or Rod is in distress," said Pratt.

"Rogers was a seaman, and there's nothing unlikely in his sister knowing something of Morse. I had a pa.s.sion for ciphers at one time, and my sister Joan was very keen on it, I can tell you. Anyway, we'll ask Rogers in the morning."

They got up to a late breakfast. Rogers brought them their bacon and eggs, and they were struck by a peculiarity in his appearance.

"I say, Rogers, what's happened to your beautiful auburn locks?" asked Pratt.

The innkeeper looked profoundly depressed.

"I begged and prayed the missus, but 'twas no good," he answered. "She will have me wear a nightcap at night, and my hair by day, no matter how hot it be. I said as every one will laugh at me, and she said as health comes afore feelings."

"A very wise woman. Still, as a mere matter of scientific curiosity, we'd like to know how that brown became apple-green."

Rogers s.n.a.t.c.hed off his wig and held it out with a gesture of indignation.

"'Tis a trick of some blessed young scug in the village, and if I catch him I'll give him all the colours of the rainbow. I did but set my hair on a pea-stick while I was digging yesterday, the missus being out for the day. I own I forgot it, and when, come night, I thought I'd better put it on, bless me if I could find it. Half an hour after I'd closed the door the missus came home. 'Here's a parcel on the doorstep,' says she, and then she undoes it, and gives a shriek. 'You wicked man!' says she: 'you've done it just to rile me.' As if the cussed thing warn't bad enough brown, for one to want it green! Of course I telled her as how I'd put it down and missed it, and she went on like one o'clock, said I'd have to wear it, green or blue, and I'd better stand out in the first shower of rain and see if it'd wash clean, and 'twould be a lesson to me. Don't you never go bald, young gentlemen: 'tis the way to break up a happy home."

"Hard luck, Rogers," said Pratt. "But the colour will soon wear off.

You'll be piebald for a bit, I dare say--sort of mottled, you know; but n.o.body will think the worse of you. I say, you and your sister were great pals, weren't you?"

"Till the missus come along, sir."

"And no doubt you taught her how to splice ropes and reef sails, and make signals, and all that?"

"There you're wrong, sir. The la.s.s don't know more than a babby about such things; and as for signals, I don't know nothing about 'em myself."

Pratt looked crestfallen.

"One theory exploded," remarked Armstrong.

"Did 'ee signal for help last night?" asked Rogers.

"Well, we----" Pratt began, but Warrender interrupted him.

"No, we hadn't time," he said. "The fire came on us too suddenly. By the way, we shall have to buy some new things. I suppose Blevins can provide us with a tent?"

"Surely, sir; he've most everything somewhere about. I always thought no good 'ud come of camping on that island. There's a fate in it."

"How long has it had this ill name?" asked Armstrong.

"Not so long, sir. You see, n.o.body bothered much about it after the old man died years ago. It didn't belong to no one, seemingly; there was nothing to take any of the folk there; and 'twasn't till a month or two ago that they began to talk of sperits. Nick Rush came in all of a tremble one night--he'd been away for a bit--and said he was setting a snare there when he heard most horrible groanings and moanings. He took some of the folk along, and they heard 'em too, and ever since then the village have give it a wide berth. You're well out of it, that's what I say. Not as ghosts carry matches, though; I reckon 'twas one of you young gentlemen a-smoking as did the mischief."

"A lesson to us, Rogers," said Pratt, gravely. "Smoking is a very bad habit, according to our masters at school--who all smoke like furnaces--they ought to know."

They had hardly finished breakfast when Mr. Crawshay drove down to the ferry in a light trap, crossing on foot.

"It's true, then," he said, as he entered the parlour. "I knew nothing about it until an hour ago. A lighted match, they say."

Pratt got up and closed the door.

"Let them say, sir. We were burnt out."

"You don't say so! Upon my word, it's time something was done. Have you lost much?"

"Almost everything but our clothes."

"Scandalous! Then you'll come up to the house?"

"We'd rather keep to our arrangement, sir," said Warrender. "It will give us a better chance of running the fellows to earth. We think of making a thorough search on the island. The difficulty is that we can't do it by daylight; we are sure to be watched, at any rate for a day or two. There's another difficulty. They're sure to keep their eye on our motor-boat and dinghy; it will be too risky to use them. Of course, we could swim the river, but it would be a bit of a nuisance."

"I can help you there. You had better not use my skiff, but I've an old Norwegian pram in one of my outhouses----"

"A what, sir?" asked Pratt.

"A pram--a sort of abbreviated punt. At one time I used it for fishing on the river. It's small and very light; two of you could carry it.

You had better fetch it yourselves; my men might talk in the village. I have set them clearing a camping-place for you, by the way. It's about half-way between here and the island. But I can't lend you a tent."

Warrender explained that he proposed to buy one of the general dealer.

"Very well," said Mr. Crawshay. "I shall expect you to lunch. We'll talk over things then more at leisure."

While Warrender went off to do the necessary shopping, Armstrong and Pratt, in the dinghy, set out for their new camping-place. It lay on the sh.o.r.e of a little natural bay some fifteen yards deep and about half that width. Mr. Crawshay's gardeners had already mown the long gra.s.s and lopped some of the lower branches of overhanging trees. A ten minutes' walk through the wood and across fields brought the two boys to the house, where Mr. Crawshay had already arrived. Having seen that none of his men were about, the old gentleman led them to the outhouse in which he kept his pram; and by the time that Warrender, conveying his purchases in the motor-boat, reached the new encampment, the others had carried the odd little craft across the fields, and found a secure hiding-place for it in the wood a little distance from the bay, almost opposite to the north end of the island, near a spot convenient for landing under cover of the trees. With it Mr. Crawshay had lent them a couple of light oars.

After erecting their new tent--a sorry specimen compared with the one that had been destroyed--they went up to the house for lunch, discussed their plans with Mr. Crawshay privately in his study, and returned to fence the camp with barbed wire and get things in order. So far there had been no sign of the enemy; but in the course of the afternoon Armstrong climbed a tree from which, un.o.bserved himself, he could obtain a view of the opposite bank of the river, and discovered without surprise that a spy was lurking among the bushes. No doubt all their ostensible proceedings had been watched, and they congratulated themselves on the illusion of mere defensiveness which their business-like activity must have created.

During the remainder of the day they were careful not to depart from their usual procedure. They had an early supper; when they had cleared away and washed up, they placed three oddly a.s.sorted and shabby deck-chairs, purchased from Blevins, in front of the tent, and while Armstrong and Warrender read newspapers, Pratt warbled sentimental ditties to the accompaniment of his banjo.

Just before dark Pratt and Armstrong went into the tent to go to bed, while Warrender perambulated the camp armed with a thick club. The spin of a coin had decided that he should remain on guard while the others paid a nocturnal visit to the island.

About midnight, when it was quite dark, the two raiders crept out of the tent, and striking inland for a little, made their roundabout way to the spot where the pram was hidden. Reconnoitring carefully, to a.s.sure themselves that their movements had not been followed, they lifted the pram, lowered it gently into the water, and pushed off, floating on the tide near the bank, and steering with one oar in the stern. They struck the sh.o.r.e of the island about midway, seized a projecting branch, and drawing their craft into the bank, pulled it up among the reeds at the edge. Then they started to cross the island.

It was pitch-dark in the thicket. Spreading roots and trailing brambles tripped their feet; their faces were lashed by the foliage as they pushed their way through; thorns caught at their clothes. It was difficult to avoid noise. Twigs snapped underfoot, branches creaked and rustled, and every now and again there was a strident shriek of rent clothing as they tore themselves from the embrace of some clinging bramble. Heedless of the obstacles, hot and weary, they plodded doggedly on, and presently, after making unconscionably slow progress, they emerged upon the bank of the river. The stream looked much wider than they had expected.

"Whereabouts are we?" whispered Pratt.

"We've come too far south, I fancy," returned Armstrong.

They peered up and down, trying vainly to discover some landmark. They stood listening; there was breeze enough to cause the moaning, but they heard no sound except the rustle of the leaves and the gentle gurgle of the tide. They cast about, taking wary steps up stream and down; hoping in one direction or the other to come upon the wilderness garden.

Suddenly Pratt whispered: "I say, this isn't a tidal river, is it?"

"No; it always flows down," replied Armstrong. "Why?"

"Because----"