'A white camel loaded with oats is coming over the pass...
That was the agreed formula. It had come through the proper channels, through Hassan. But it disturbed Dakin deeply. 'Either,' he said, 'my best and most reliable man has gone mad, or this thing is true. And yet it can't be true, it's too fantastic!"
Dakin sighed, drew a circle on his blotter and wrote under it the word 'Baghdad'. Then he sketched a camel, an aeroplane, a steamer, a small puffing train, all approaching the circle from different directions. On the corner of his pad he drew a spider's web. Underneath it, a big question mark. He stared at what he had done and murmured: 'They came to Baghdad...'