I picked it up, and laid it on the counter. 'So,' I said, 'diamonds, Mr Japp. You have found the pipe I was looking for. I congratulate you.'

My words gave the old ruffian his cue. 'Yes, yes,' he said, 'I have, or rather my friend 'Mwanga has. He has just been telling me about it.'

The Kaffir looked miserably uncomfortable. He shifted from one leg to the other, casting longing glances at the closed door.

'I tink I go,' he said. 'Afterwards we will speak more.'

I told him I thought he had better go, and opened the door for him. Then I bolted it again, and turned to Mr Japp.

'So that's your game,' I said. 'I thought there was something funny about you, but I didn't know it was I.D.B. you were up to.'

He looked as if he could kill me. For five minutes he cursed me with a perfection of phrase which I had thought beyond him. It was no I.D.B., he declared, but a pipe which 'Mwanga had discovered. 'In this kind of country?' I said, quoting his own words. 'Why, you might as well expect to find ocean pearls as diamonds. But scrape in the spruit if you like; you'll maybe find some garnets.'

He choked down his wrath, and tried a new tack. 'What will you take to hold your tongue? I'll make you a rich man if you'll come in with me.' And then he started with offers which showed that he had been making a good thing out of the traffic.

(Editor：data)