'Much nicer than indoors,' said Tricksy. 'I wish we could live here altogether.'

'Jolly tired you'd get of it,' growled Reggie; 'wait till it rains, and you find yourself shut up with half-a-dozen other people, and both the dogs, in one little smoky room. You'd tell another tale then.'

'What I will be wondering, Miss Marjorie,' said Neil; 'iss why you will all be taking so much trouble to keep every one but ourselves from knowing that you have this place?'

'It is only for a little while,' replied Marjorie. 'Of course we will bring father and mother over here for a picnic some day and give them a surprise.'

'And _my_ father and mother too,' piped Tricksy; 'we wouldn't want to keep a thing from Mummie, except just for a little while, for fun.'

'Then how iss it that you will be finding so much pleasure in having a secret just now?'

Marjorie looked out to sea with a puzzled expression.

'I don't know,' she said at last, with a little laugh; 'except that it's such fun knowing that we've got a secret!'

'I've been thinking,' said Allan, who was lying full length upon a ridge and looking towards Inchkerra, 'while we are having such a jolly time of it over here, what must be the feelings of the man who stole those letters, now he knows that the police are after him!'

The others all looked towards the island, where they could see the low, grey cottages of the little village.

'It seems strange that they haven't got him yet,' observed Marjorie.

'I met MacLean the constable from Stornwell this morning,' said Hamish, 'and he told me that they had no trace as yet, and that they believed it must have been done by some stranger who came over from the mainland, and got away immediately after the robbery.'

'I hope so,' said Allan; 'it isn't nice to think of any of our people being dishonest.'

'If it was a stranger,' said Reggie; 'they may never catch him.'

'I heard father say that he would be traced by the money-orders,'

replied Allan. 'It seems that there were several post-office orders in a registered letter addressed to father, and that is one of the letters that is missing. Father says that the thief is sure to try to make use of the orders sooner or later, and they have sent the numbers to every post-office in the kingdom.'

'And then the man will be caught!' said Tricksy in an awestruck tone.

'That will be the best chance of getting him,' replied Allan.

'The fellow will find himself in the wrong box then, won't he, Neil?'

'I suppose he will,' replied Neil, rather absently.

'I hope it won't turn out to have been some one on the island,' said Reggie.

'I hope not,' said Marjorie, looking over to the green fields and brown heather moors of Inchkerra. 'Isn't it dreadful to think that it may have been some one whom we know; some one we have spoken to quite lately?'

'Well, Miss Marjorie,' said Neil, 'do you not think we had better be getting the table cleared and the things put away? We have plenty of work before us, if we are to plant all Reggie's ferns; and we must not stay too late, for it iss anxious about you that Mrs. Stewart and Mrs.

MacGregor will be.'

'Not they,' said Tricksy; 'no one is anxious when they know that you are with us, Neil.'

Neil looked gratified, and the young people began to collect the dishes.

'Now, don't you bother about this piece of work,' said Marjorie, when the boys had carried the plates into the cottage; 'you go and amuse yourselves out-of-doors while Tricksy and I wash the dishes.'

'I wonder why you don't let them do their share of the disagreeable work, Marjorie,' said Tricksy a little discontentedly, when the boys had vanished.

'Pooh,' said Marjorie, with her arms in the hot water; 'what's the good? They'd only hate it, and besides, boys always do these things badly.'

When the dishes and cooking utensils had been arranged upon the shelves, Marjorie and Tricksy went out into the garden, their eyes somewhat dim with peat smoke.

'Come along and help, you two,' cried Reggie; 'must get these things in this afternoon, or they'll be dead before we come back again. Bother it, though; we haven't enough tools to go round.'

'Here, Miss Tricksy,' interposed Neil; 'you take this little spade.

This sharp piece of wood will be doing just as well for me.'

'And I've got a pointed piece of slate; I can sc.r.a.pe holes with that,'

said Allan. 'Take this old trowel, Marjorie; it hasn't a handle, but I don't suppose you'll mind.'

For a long time the young people worked with a will. The sun beat down upon the unshaded island, and the breeze blew in from the sea, bringing a salt taste to the lips and blowing the girls' hair about. The waves babbled round the sh.o.r.e, and the gulls sailed overhead and screamed.

When the sun's rays began to slant, and the pile of ferns was diminishing, Neil kept glancing over his shoulder to watch the tide.

'There now, that's done,' said Reggie, pressing the earth round the roots of the last fern and then rising; 'it's a jolly long time it has taken us. What shall we do next?'

'I think we ought to go now,' said Hamish. 'What do you say, Neil?'

'It is high time we wa.s.s making a start,' said Neil. 'The tide iss rising fast, and the beach iss half covered already.'

'What a pity,' said Tricksy regretfully; 'we've had such a jolly day of it, haven't we, Marjorie?'

'Awfully jolly,' replied Marjorie; 'but we'll come again soon.--You'll come too, won't you, Neil?'

'I will be coming as soon as I can be sparing the time, you may be sure of that, Miss Marjorie,' replied the lad with a smile.

The dogs were recalled from the rabbit-holes and came, their faces covered with sand, and the boat was pushed off from the sh.o.r.e.

Half-way across the firth, Marjorie turned and looked back regretfully.

'What a pity we have to go home,' she said. 'It would be awfully jolly to spend all night in the cottage.'

'Look to your oar, Marjorie,' sang out Allan, for the boat was beginning to turn round.

In a short time they reached the landing-stones, of which the lower ones were already submerged.

'Won't you all look in and see Mother before you go home?' suggested Neil, after the boat had been drawn up and secured to the mooring-chain. 'She'd be pleased if you'd come and say good evening to her; and Miss Tricksy, you would be seeing the little puffins that Hamish gave you; Mother tells me that they're coming along finely.'

Mrs. Macdonnell's cottage was not far distant, and the young people accepted Neil's invitation.

'I'll just tell Mother that you're here,' said Neil, lifting the latch and vanishing in the interior of the cottage.

'I wonder who Mrs. Macdonnell has with her,' said Allan, in an undertone. 'I hear voices inside. Perhaps we had better not go in this evening.'