Daisy looked down at the trilobite; and looked profoundly thoughtful. That little, shiny, black, stony thing, that had lived and flourished so many ages ago! Once more she looked up into the Captain's face to see if he were trifling with her. He shook his head.

"True as a book, Daisy."

"But, Captain Drummond, please, how do you know it?"

"Just think, Daisy, this little fellow frolicked away in the mud at the bottom of the sea, with his half-moons of eyes and round him swam all sorts of fishes that do not live nowadays; fishes with plate armour like himself; everybody was in armour."

"Half-moons of eyes, Captain Drummond?"

"Yes. He had, or some of them had, two semi-circular walls of eyes one looked before and behind and all round to the right, and the other looked before and behind and all round at the left; and in each wall were two hundred eyes."

The Captain smiled to himself to see Daisy's face at this statement, though outwardly he kept perfectly grave. Daisy's own simple orbs were so full and intent. She looked from him to the fossil.

"But, Captain Drummond " she began, slowly.

"Well, Daisy? After you have done, I shall begin."

"Did you say that this thing lived at the bottom of the sea."