"I think that this should do," said he, glancing into the glass
above the fireplace. "I only wish that you could come with me,
Watson, but I fear that it won't do. I may be on the trail in
this matter, or I may be following a will-o'-the-wisp, but I
shall soon know which it is. I hope that I may be back in a few
hours." He cut a slice of beef from the joint upon the sideboard,
sandwiched it between two rounds of bread, and thrusting this
rude meal into his pocket he started off upon his expedition.

I had just finished my tea when he returned, evidently in
excellent spirits, swinging an old elastic-sided boot in his
hand. He chucked it down into a corner and helped himself to a
cup of tea.

"I only looked in as I passed," said he. "I am going right on."

"Where to?"

"Oh, to the other side of the West End. It may be some time
before I get back. Don't wait up for me in case I should be
late."

"How are you getting on?"

"Oh, so so. Nothing to complain of. I have been out to Streatham
since I saw you last, but I did not call at the house. It is a
very sweet little problem, and I would not have missed it for a
good deal. However, I must not sit gossiping here, but must get
these disreputable clothes off and return to my highly
respectable self."