'Well, sir,' returned John, brushing his hand across his eyes, 'then I wish you'd do the same.'

He was quick with this unexpected retort, and it again made Arthur regard him with a wondering expression of face.

'Leastways,' said John, stretching his hand across the tea-tray, 'if too strong a remark, withdrawn! But, why not, why not? When I say to you, Mr Clennam, take care of yourself for some one else's sake, why not be open, though a turnkey? Why did I get you the room which I knew you'd like best? Why did I carry up your things? Not that I found 'em heavy; I don't mention 'em on that accounts; far from it. Why have I cultivated you in the manner I have done since the morning? On the ground of your own merits? No. They're very great, I've no doubt at all; but not on the ground of them. Another's merits have had their weight, and have had far more weight with Me. Then why not speak free?'

'Unaffectedly, John,' said Clennam, 'you are so good a fellow and I have so true a respect for your character, that if I have appeared to be less sensible than I really am of the fact that the kind services you have rendered me to-day are attributable to my having been trusted by Miss Dorrit as her friend--I confess it to be a fault, and I ask your forgiveness.'

'Oh! why not,' John repeated with returning scorn, 'why not speak free!'

'I declare to you,' returned Arthur, 'that I do not understand you. Look at me. Consider the trouble I have been in. Is it likely that I would wilfully add to my other self-reproaches, that of being ungrateful or treacherous to you. I do not understand you.'

John's incredulous face slowly softened into a face of doubt. He rose, backed into the garret-window of the room, beckoned Arthur to come there, and stood looking at him thoughtfully.

'Mr Clennam, do you mean to say that you don't know?'

'What, John?'

'Lord,' said Young John, appealing with a gasp to the spikes on the wall. 'He says, What!'

Clennam looked at the spikes, and looked at John; and looked at the spikes, and looked at John.

'He says What! And what is more,' exclaimed Young John, surveying him in a doleful maze, 'he appears to mean it! Do you see this window, sir?'

'Of course I see this window.'

'See this room?'

'Why, of course I see this room.'

'That wall opposite, and that yard down below? They have all been witnesses of it, from day to day, from night to night, from week to week, from month to month. For how often have I seen Miss Dorrit here when she has not seen me!'