They shut the door and retired into the other room to talk it all over with many pipes. Greene questioned his friend very closely, but without illuminating result, since questions cannot alter facts.
"The only thing that ought to have a proper, a logical, explanation is the pain in my arm," said Marriott, rubbing that member with an attempt at a smile. "It hurts so infernally and aches all the way up. I can't remember bruising it, though."
"Let me examine it for you," said Greene. "I'm awfully good at bones in spite of the examiners' opinion to the contrary." It was a relief to play the fool a bit, and Marriott took his coat off and rolled up his sleeve.
"By George, though, I'm bleeding!" he exclaimed. "Look here! What on earth's this?"
On the forearm, quite close to the wrist, was a thin red line. There was a tiny drop of apparently fresh blood on it. Greene came over and looked closely at it for some minutes. Then he sat back in his chair, looking curiously at his friend's face.
"You've scratched yourself without knowing it," he said presently.
"There's no sign of a bruise. It must be something else that made the arm ache."
