"You're mad."
"I heard it too," said Otto, "and it seems to me that it hit the tree."
"What tree?"
"The oak, of course! It was as though somebody had fired at us."
"There was no report."
"A stone, then; a stone that must have hit the oak."
"We'll soon see," said Vorski.
He turned his lantern and at once let fly an oath:
"Damn it! Look, there, under the lettering."
They looked. An arrow was fixed at the spot to which he pointed. Its feathered end was still quivering.