'Ah! She's not that old green launch with a yellow line, very broad in the beam?'
'No, indeed. She's as trim a little thing as any on the river. She's been fresh painted, black with two red streaks.'
'Thanks. I hope that you will hear soon from Mr. Smith. I am going down the river, and if I should see anything of the Aurora I shall let him know that you are uneasy. A black funnel, you say?'
'No, sir. Black with a white band.'
'Ah, of course. It was the sides which were black. Good-morning, Mrs. Smith. There is a boatman here with a wherry, Watson. We shall take it and cross the river.
'The main thing with people of that sort,' said Holmes, as we sat in the sheets of the wherry, 'is never to let them think that their information can be of the slightest importance to you. If you do, they will instantly shut up like an oyster. If you listen to them
