They all sat down around the table in the middle of the room.
"We'll finish Ogden first, and let him go," said Mr. Magruder, laughing. "Ogden, here's a map of Crofield and all the country from there to Mertonville. I want to ask some questions."
He knew what to ask, too; but Jack's first remark was not an answer.
"Your map's all wrong," said he. "There isn't sand and gravel in that hill across the Cocahutchie, beyond the bridge."
"Your map's all wrong," said Jack.
"What is there, then?" asked a gentleman, who seemed to be one of the civil engineers, pettishly. "I say it's earth and gravel, mainly."
"Clear granite," said Jack. "Go down stream a little and you'll see."
"All right," exclaimed Mr. Magruder; "it will be costly cutting it, but we shall want the stone. Go ahead now. You're just the man we needed."