"Eggs and bacon, and bread and milk, and porridge and things. Mother gives it to us. What are Mega-what's-its-names and Ptero-what-do-you-call-thems? And does anyone have them for breakfast?"

"Why, almost everyone had Pterodactyl for breakfast in my time! Pterodactyls were something like crocodiles and something like birds—I believe they were very good grilled. You see, it was like this: of course there were heaps of Sand-fairies then, and in the morning early you went out and hunted for them, and when you'd found one it gave you your wish. People used to send their little boys down to the seashore in the morning before breakfast to get the day's wishes, and very often the eldest boy in the family would be told to wish for a Megatherium, ready jointed for cooking. It was as big as an elephant, you see, so there was a good deal of meat on it. And if they wanted fish, the Ichthyosaurus was asked for,—he was twenty to forty feet long, so there was plenty of him. And for poultry there was the Plesiosaurus; there were nice pickings on that too. Then the other children could wish for other things. But when people had dinner-parties it was nearly always Megatheriums; and Ichthyosaurus, because his fins were a great delicacy and his tail made soup."

"There must have been heaps and heaps of cold meat left over," said Anthea, who meant to be a good housekeeper some day.

"Oh no," said the Psammead, "that would never have done. Why, of course at sunset what was left over turned into stone. You find the stone bones of the Megatherium and things all over the place even now, they tell me."

"Who tell you?" asked Cyril; but the Sand-fairy frowned and began to dig very fast with its furry hands.

"Oh, don't go!" they all cried; "tell us more about when it was Megatheriums for breakfast! Was the world like this then?"

It stopped digging.

"Not a bit," it said; "it was nearly all sand where I lived, and coal grew on trees, and the periwinkles were as big as tea-trays—you find them now; they're turned into stone. We Sand-fairies used to live on the seashore, and the children used to come with their little flint-spades and flint-pails and make castles for us to live in. That's thousands of years ago, but I hear that children still build castles on the sand. It's difficult to break yourself of a habit."

"But why did you stop living in the castles?" asked Robert.

"It's a sad story," said the Psammead gloomily. "It was because they would build moats to the castles, and the nasty wet bubbling sea used to come in, and of course as soon as a Sand-fairy got wet it caught cold, and generally died. And so there got to be fewer and fewer, and, whenever you found a fairy and had a wish, you used to wish for a Megatherium, and eat twice as much as you wanted, because it might be weeks before you got another wish."