"Anyway, we won't ask you to do the repairs, Tommy, if you don't like it."

"Oh, I didn't mean that," said Tommy at once; "I'll do my fair share, but I know I shall get a bit ratty if a silly old storm knocks our nice hut to pieces."

The thatching occupied two more days, and then the girls looked with a great deal of pleasure on their neat little hut.

"But we haven't done yet," said Elizabeth. "The thatch will protect us from any ordinary rain, but we're still liable to be swamped by water running down the hill behind. We had better sc.r.a.pe out a trench all round, to carry the water down to the sh.o.r.e."

This proved the hardest part of the work. They had no tools except their knives and the boat-hook, and with these to cut a trench deep enough to be effective was very trying to their patience. Such continuous plodding work did not suit Tommy's restless, active temperament at all, and she would constantly jump up and run off to the beach, or to the edge of the wood. At such times Mary was inclined to be impatient and reproachful, but Elizabeth said that they mustn't expect too much from Tommy.

"She's very young, you know, and it's really wonderful how her spirits have kept up so well. She's more nervy than we are, Mary, and I am always afraid she will break down."

So neither she nor Mary said anything to Tommy about her fitfulness, and Tommy herself always came back repentant after these little absences, and worked away hard until the next fit of restlessness overtook her.

To give her a change from sc.r.a.ping away at the trench, Elizabeth suggested that she should make a mat curtain for the open side of the hut.

"We don't want a door," she said, "but a curtain will be useful at night. Leave a little s.p.a.ce between it and the roof for ventilation.

We can fasten the two lower corners to the canes."

Tommy set about this task willingly, and had the curtain fixed by the time the trench was finished. The hut was now complete so far as its exterior was concerned; it had taken more than a fortnight altogether.

What they had now to consider was the internal fittings. Tommy laughed when this was mentioned.

"We can't get a bedroom suite, even on the hire system," she said. "I suppose you'd call it a bed-sitting-room, wouldn't you?"

"Let's call it 'Our Flat,'" suggested Mary.

"The best flat that ever was," said Tommy. "No botherations from unpleasant neighbours--at least, I hope not."

"We certainly shan't have a tiresome piano going next door," said Elizabeth. "I think 'Our Flat' is a very good name. What a pity we haven't a table and pen, ink and paper!--then Mary could write a diary of our doings."

"With moral reflections," added Tommy. "'To-day our youngest sister refused to wash up; how sad to see such a selfish spirit in one so young!' That's the sort of thing, isn't it, Mary?"

"I shouldn't write anything of the sort," said Mary indignantly. "You haven't refused to wash up, and if you did, do you think I should tell it?"

"My dear, you are perfectly killing," said Tommy. "Do you think you'd get your old diary published? No one would read it if you did."

"We're talking nonsense, aren't we?" said Elizabeth. "There's no chance of any of us writing a diary. Let's be practical. The only furniture we can supply ourselves with is--beds."

"More weaving?" cried Tommy. "Oh, I am so sick of it, Bess. Can't we sleep on the ground?"

"I don't think we'd better; we might get rheumatism, though to be sure the ground seems dry enough at present. But I own that weaving mats day after day is rather tiring, so shall we leave it for the present, and still sleep in the boat? What do you say to doing a little more exploration?"

"Yes, why not?" said Tommy eagerly. "We haven't seen a soul--since I saw that figure move along the top of the ridge, at any rate; and I dare say that was an animal of some kind. I don't think there are any people here at all."

"There may be some on the other side of the ridge," said Mary.

"Well, if there are, they must be a very unenterprising lot," said Tommy. "Let's follow up the stream to its source. I've never seen the source of a river, and that'll be geography, won't it? Besides, our bananas will soon be all gone, and we ought to look for some more; we can't live on nothing but fish."

"Very well; we will do as you say," said Elizabeth. "It's very hot to-day, so we'll cover our heads with leaves; it's just as well to take precautions."

Shortly afterwards they set out, carrying the oars and the boat-hook as weapons of defence. Although they had gained confidence from never having seen any human being, as soon as they had walked beyond the limit of their previous excursions they felt something of the old timidity, and spoke only in whispers.

"Our flag is still flying," said Tommy, as they came to a spot whence they could see the tree she had climbed on their first day on the island. "Evidently no one has seen it or thought it worth noticing."

"That's a consolation in one way," said Elizabeth. "These South Sea Islanders have canoes, haven't they, Mary? We haven't seen any, which is a negative proof that our island isn't inhabited; but if any people from another island happened to have come this way, they would almost certainly have noticed our flag, and perhaps come to see what it meant."

They were following the course of the stream. It zigzagged about a good deal, at first through a fairly thick belt of woodland, then through a comparatively clear s.p.a.ce of a few hundred yards, then into woodland again, always narrowing. They were still some distance below the crest of the ridge when they came to a small swamp, beyond which there was no stream.

"This must be the source," said Mary.

"How disappointing!" said Tommy. "I wanted to see a nice little spring, with beautiful clear water bubbling up. This swamp is simply horrid."

"There must be a spring somewhere in the swamp," said Elizabeth, smiling. "But it isn't worth while to hunt for it, even if we could find it. The stream is certainly prettier lower down. Let's go on; we are not very far from the top, and we might be able to get a good view from there--see the whole of the island and the sea beyond."

"I feel quite like a discoverer," said Mary. "Can't you imagine how Drake must have felt when he first caught sight of the Pacific?"

"You romantic old dear!" cried Tommy. "I don't care a bit what Drake felt; all I hope is we shan't wish we hadn't come."

They went on quietly, feeling a little nervous. The ground here was bare except for a few shrubs, and they drew their breath more quickly as they mounted the slope. At last they reached the top. One and all gave a sigh of disappointment. Directly in front of them, to the north, was a second ridge higher than the one on which they stood. But on every other side there was a fine view. To the south the land fell away rapidly towards the sea, of which they caught a glimpse over the tree-tops nearly a mile away. To the west, the direction from which they had come, the sea was much farther off. To the east there was a gradual slope downwards into a country for the most part densely wooded, but here and there showing traces of clearings natural or otherwise. The greatest extent of land seemed to be to the north-east, where the sea was much farther remote than it was on the west. None of the girls had any experience in judging distances, but they saw that the island was longer than it was broad, and that the greatest length was from north-west to south-east.

"Shall we go to the farther ridge?" asked Elizabeth.

"Yes, let's," said Tommy. "There isn't a sign of a living creature; the island is just ours."

A thick belt of woodland separated the two ridges at the point where they stood, so they moved somewhat to the right to search for a more open way. All at once they came to a halt. A little in front of them was a pole, carrying what appeared to be the remains of a small flag.

About fifty paces beyond it was another exactly similar; and then they saw that there were five or six altogether, extending along the crest of the ridge, all the same distance apart.

"I think we had better go back," said Mary, looking a trifle scared.

"There are people after all."

Her sisters were equally disturbed at the sight of poles evidently erected by human agency. There was n.o.body to be seen, and from the appearance of the poles they were not attended to; the flags on them were the merest rags of coloured cloth. But the girls were not inclined to face any more discoveries. The bare possibility that there were savages on the island made them shiver. They paused for a few moments at the spot where they first caught sight of the poles, and then turned, intending to make their way in the direction of home.

Just then, however, Tommy caught sight of some bananas cl.u.s.tering thick a little way down the slope on the eastern side.

"I'm hungry," she said. "Those look bigger than what we have had.

Couldn't we go and fetch a few?"

The clump of trees lay on the slope below the line of poles, a good distance away from them.

"It's rather silly to be scared so easily," said Elizabeth. "There isn't a sign of anybody; I think we might venture. We must find a new supply."

They moved quickly down towards the trees, listening, peering about them, ready to fly at the least alarm. But when they came to the trees they felt that they had the reward of courage, for there, within a short distance of them, was a sight that made them gasp with surprise and delight. Beside the stumpy, long-leaved banana-trees, there were other trees glittering with green and yellow fruit and with white blossom. The laden boughs bent down invitingly, and beneath them the golden globes of fallen fruit glowed amid the gra.s.s.

"Oranges, I declare!" exclaimed Mary.

"How lovely!" cried Tommy, forgetting all her fears, and running forward to pick an orange from the ground.

Her sisters followed more leisurely, but before they reached her Tommy suddenly uttered a cry of terror. The orange she had taken fell from her hand. The other girls ran to her side and found her pale with fright.

"There!" she said, pointing towards a clump of hibiscus.