“We couldn’t, why each step’s as big as I am. And besides——”

“Well?”

“I distinctly heard my little bantam crow!” and Coppertop set her lips firmly.

“’Es, and I heard the Golden Larks—I did!” cried Kiddiwee, his little face glowing with excitement.

“Well, so did I; but that’s no reason why we shouldn’t climb the Pyramid. Come on!”

“No,” said Coppertop, and she meant it. “That crowing was a kind of mysterious warning!”

“Oh, rot!” interrupted Tibbs, but he looked slightly uncomfortable all the same.

“Yes, it was! I shall be dreadfully angry if you say it’s ‘rot.’ It’s a warning that time is getting short, and I’ve simply got to find that old December day as fast as ever I can.”

“Look!” cried Kiddiwee. “What funny sand!”

The others looked, and saw, to their surprise, that letters were being written on the sand, as though by some great invisible finger. Spelling it letter by letter, it read—