And, sure enough, they had to. And the housemaid put them to bed, and washed them with yellow soap, and some of it got in their eyes. And she lit a night-light, and sat with them till they went to sleep, so that they couldn’t talk, and were ever so much longer getting to sleep than they would have been if she had not been there. And the beds were iron, with mattresses and hot, stuffy, fluffy sheets and many more new blankets than they wanted.

The next day they got out as early as they could and played water football with the seal and the Bouncible Ball, and when dinner-time came it was lobster and ices. But Thomasina was in a bad temper. She said, “I wish it was duck.” And before the words had left her lips it was cold mutton and rice-pudding, and they had to sit up to table and eat it properly too, and the housemaid came round to see that they didn’t leave any bits on the edges of their plates, or talk with their mouths full.

There were no more really nice meals after that, only the sort of things you get at home. But it is possible to be happy even without really nice meals. But you have to be very careful. The days went by pleasantly enough. All the sea and land creatures were most kind and attentive. The seal taught them all it knew, and was always ready to play with them. The star-fish taught them astronomy, and the jelly-fish taught them fancy cooking. The limpets taught them dancing as well as they could for their lameness. The sea-birds taught them to make nests—a knowledge they have never needed to apply—and if the oysters did not teach them anything it was only because oysters are so very stupid, and not from any lack of friendly feeling.

The children bathed every day in the sea, and if they had only been content with this all would have been well. But they weren’t.

A LONG, POINTED THING CAME SLOWLY UP OUT OF THE SAND.

“Let’s dig a bath,” said Selim, “and the sea will come in and fill it, and then we can bathe in it.”

So they fetched their spades and dug—and there was no harm in that, as you very properly remark.

But when the hole was finished, and the sea came creep, creep, creeping up—and at last a big wave thundered up the sand and swirled into the hole, Thomasina and Selim were struggling on the edge, fighting which should go in first, and the wave drew sandily back into the sea, and neither of them had bathed in the new bath. And now it was all wet and sandy, and its nice sharp edges rounded off, and much shallower. And as they looked at it angrily, the sandy bottom of the bath stirred and shifted and rose up, as if some great sea-beast were heaving underneath with his broad back. The wet sand slipped back in slabs at each side, and a long pointed thing like a thin cow’s back came slowly up. It showed broader and broader, and presently the flakes of wet sand were dropping heavily off the top of a brand-new bathing machine that stood on the sand over where their bath had been.

“Well,” said Selim, “we’ve done it this time.”