“And never to any other person?”

“Never to any other person.”

“What did you observe when you opened the safe?”

“I observed that the parcel of diamonds had disappeared.”

“Did you notice anything else?”

“Yes.  I found the leaf from my memorandum block lying at the bottom of the safe.  I picked it up and turned it over, and then saw that there were smears of blood on it and what looked like the print of a thumb in blood.  The thumb-mark was on the under-surface, as the paper lay at the bottom of the safe.”

“What did you do next?”

“I closed and locked the safe, and sent a note to the police station saying that a robbery had been committed on my premises.”

“You have known the prisoner several years, I believe?”

“Yes; I have known him all his life.  He is my eldest brother’s son.”

“Then you can tell us, no doubt, whether he is left-handed or right-handed?”

“I should say he was ambidextrous, but he uses his left hand by preference.”

“A fine distinction, Mr. Hornby; a very fine distinction.  Now tell me, did you ascertain beyond all doubt that the diamonds were really gone?”

“Yes; I examined the safe thoroughly, first by myself and afterwards with the police.  There was no doubt that the diamonds had really gone.”

“When the detective suggested that you should have the thumb-prints of your two nephews taken, did you refuse?”

“I refused.”

“Why did you refuse?”

“Because I did not choose to subject my nephews to the indignity.  Besides, I had no power to make them submit to the proceeding.”

“Had you any suspicions of either of them?”

“I had no suspicions of anyone.”

“Kindly examine this piece of paper, Mr. Hornby,” said Sir Hector, passing across a small oblong slip, “and tell us if you recognise it.”

Mr. Hornby glanced at the paper for a moment, and then said—­

“This is the memorandum slip that I found lying at the bottom of the safe.”

“How do you identify it?”

“By the writing on it, which is in my own hand, and bears my initials.”

“Is it the memorandum that you placed on the parcel of diamonds?”

“Yes.”

“Was there any thumb-mark or blood-smear on it when you placed it in the safe?”

“No.”

“Was it possible that there could have been any such marks?”

“Quite impossible.  I tore it from my memorandum block at the time I wrote upon it.”

“Very well.”  Sir Hector Trumpler sat down, and Mr. Anstey stood up to cross-examine the witness.

“You have told us, Mr. Hornby,” said he, “that you have known the prisoner all his life.  Now what estimate have you formed of his character?”

“I have always regarded him as a young man of the highest character—­honourable, truthful, and in every way trustworthy.  I have never, in all my experience of him, known him to deviate a hair’s-breadth from the strictest honour and honesty of conduct.”