would rather take the photograph himself."

"I am sure he would," I agreed. "In fact, a photograph taken by another
person would not be of much use to him."

"Ah," said Mrs. Hornby in a slightly injured tone, "you think Walter is
just an ordinary amateur; but if I were to show you some of the
photographs he has taken you would really be surprised. He is remarkably
clever, I assure you."

"Would you like us to bring the book to Dr. Thorndyke's chambers?" asked
Miss Gibson. "That would save time and trouble."

"It is excessively good of you--" I began.

"Not at all. When shall we bring it? Would you like to have it this
evening?"

"We should very much," I replied. "My colleague could then examine it
and decide what is to be done with it. But it is giving you so much
trouble."

"It is nothing of the kind," said Miss Gibson. "You would not mind
coming with me this evening, would you, aunt?"

"Certainly not, my dear," replied Mrs. Hornby, and she was about to
enlarge on the subject when Miss Gibson rose and, looking at her watch,
declared that she must start on her errand at once. I also rose to make
my adieux, and she then remarked--