somewhat morose. He would hardly reply to my questions, and busied himself all evening in an abstruse chemical analysis which involved much heating of retorts and distilling of vapors, ending at last in a smell which fairly drove me out of the apartment. Up to the small hours of the morning I could hear the clinking of his test-tubes which told me that he was still engaged in his malodorous experiment.
In the early dawn I woke with a start, and was surprised to find him standing by my bedside, clad in a rude sailor dress with a pea-jacket, and a coarse red scarf round his neck.
“I am off down the river, Watson,” said he. “I have been turning it over in my mind, and I can see only one way out of it. It is worth trying, at all events.”
“Surely I can come with you, then?” said I.
“No; you can be much more useful if you will remain here as my representative. I am loath to go, for it is quite on the cards that some message may come during the day, though Wiggins was despondent about it last night. I want you to open all notes and telegrams, and to act on your own judgment if any news should come. Can I rely upon you?”
“Most certainly.”
“I am afraid that you will not be able to wire to me, for I can hardly tell yet where I may find myself. If I am in luck, however, I may not be gone so very long. I shall have news of some sort or other before I get back.”
I had heard nothing of him by breakfast-time. On opening the Standard , however, I found that there was a fresh allusion to the business.
“With reference to the Upper Norwood tragedy,” it remarked, “we have reason to believe that the