Still I said nothing. If the man had come to mock me, he would get no change out of David Crawfurd.

'Tut, tut, don't be sulky. You have no quarrel with me. Between ourselves,' and he dropped his voice, 'I tried to save you; but you had seen rather too much to be safe. What devil prompted you to steal a horse and go to the cave? I don't blame you for overhearing us; but if you had had the sense of a louse you would have gone off to the Berg with your news. By the way, how did you manage it? A cellar, I suppose. Our friend Laputa was a fool not to take better precautions; but I must say you acted the drunkard pretty well.'

The vanity of 19 is an incalculable thing. I rose to the fly.

'I know the kind of precaution you wanted to take,' I muttered.

'You heard that too? Well, I confess I am in favour of doing a job thoroughly when I take it up.'

'In the Koodoo Flats, for example,' I said.

He sat down beside me, and laughed softly. 'You heard my little story? You are clever, Mr Storekeeper, but not quite clever enough. What if I can act a part as well as yourself?' And he thrust his yellow face close to mine.

I saw his meaning, and did not for a second believe him; but I had the sense to temporize.

'Do you mean to say that you did not kill the Dutchmen, and did not mean to knife me?'

'I mean to say that I am not a fool,' he said, lighting another cigarette.