They crawled out and looked at it.

"All the words can't be clues," said Mary. "I think it must be just those four."

"Yes, undoubtedly. It's quite clear. We've only got to look it up. Where's a Bible?"

Miss Marryat hunted it out from the pile of reference books. "But that isn't the name of a Bible book," she said. "It's those things they have at evening service."

"That's all you know," said Lord Peter. "I was brought up religious, I was. It's Vulgate, that's what that is. You're quite right, of course, but, as Uncle Meleager says, we must 'look a little farther back than that.' Here you are. Now, then."

"But it doesn't say what chapter."

"So it doesn't. I mean, nor it does."

"And, anyhow, all the chapters are too short."

"Damn! Oh! Here, suppose we just count right on from the beginning—one, two, three——"

"Seventeen in chapter one, eighteen, nineteen—this must be it."