“Well, Watson,” said he, “it is time we went down to St. Luke’s. Can you do without breakfast?”

“Certainly.”

“Soames will be in a dreadful fidget until we are able to tell him something positive.”

“Have you anything positive to tell him?”

“I think so.”

“You have formed a conclusion?”

“Yes, my dear Watson, I have solved the mystery.”

“But what fresh evidence could you have got?”

“Aha! It is not for nothing that I have turned myself out of bed at the untimely hour of six. I have put in two hours’ hard work and covered at least five miles, with something to show for it. Look at that!”