"Yes."

"Now, witness," said Mr. Walters, suddenly changing his tone to one of
more severity than he had previously used, "you have told us that you
heard Sir Horace Fewbanks and the prisoner in the library while you stood
in the wood by the garage, and that subsequently you saw Sir Horace
leaning out of the window after the prisoner had gone. You are quite sure
you were able to see and hear all this from where you stood?"

"Yes."

"Are you aware, witness, that there is a large chestnut-tree at the side
of the library, in front of the window?"

Kemp considered for a moment.

"Yes," he said.

"And did not that tree obstruct your view of the library window?"

"No."

"Witness," said Mr. Walters solemnly, "listen to me. This tree did not
obstruct your view when you went to Riversbrook a week or so ago to
decide on the nature of the evidence you would give in this court. It is
bare of leaves now, and you could see the library window and even see
into the library from where you stood. But I put it to you that on the
18th of August, when this tree was covered with its summer foliage, you
could no more have seen the library window behind its branches than you