Without difficulty I can recall the next step in the
adventure with Smith, for adventure it rapidly grew to be."

The doctor stopped a moment and laid his pipe on the table behind him
before continuing. The fire had burned low, and no one stirred to poke
it. The silence in the great hall was so deep that when the speaker's
pipe touched the table the sound woke audible echoes at the far end
among the shadows.

"One evening, while I was reading, the door of my room opened and Smith
came in. He made no attempt at ceremony. It was after ten o'clock and I
was tired, but the presence of the man immediately galvanised me into
activity. My attempts at ordinary politeness he thrust on one side at
once, and began asking me to vocalise, and then pronounce for him,
certain Hebrew words; and when this was done he abruptly inquired if I
was not the fortunate possessor of a very rare Rabbinical Treatise,
which he named.

"How he knew that I possessed this book puzzled me exceedingly; but I
was still more surprised to see him cross the room and take it out of
my book-shelf almost before I had had time to answer in the affirmative.
Evidently he knew exactly where it was kept. This excited my curiosity
beyond all bounds, and I immediately began asking him questions; and
though, out of sheer respect for the man, I put them very delicately to
him, and almost by way of mere conversation, he had only one reply for
the lot. He would look up at me from the pages of the book with an
expression of complete comprehension on his extraordinary features,
would bow his head a little and say very gravely--

"'That, of course, is a perfectly proper question,'--which was
absolutely all I could ever get out of him.

"On this particular occasion he stayed with me perhaps ten or fifteen
minutes. Then he went quickly downstairs to his room with my Hebrew
Treatise in his hand, and I heard him close and bolt his door.

"But a few moments later, before I had time to settle down to my book
again, or to recover from the surprise his visit had caused me, I heard
the door open, and there stood Smith once again beside my chair. He made
no excuse for his second interruption, but bent his head down to the
level of my reading lamp and peered across the flame straight into my
eyes.

"'I hope,' he whispered, 'I hope you are never disturbed at night?'

"'Eh?' I stammered, 'disturbed at night? Oh no, thanks, at least, not
that I know of--'

"'I'm glad,' he repl