so the drakling wriggled through the hole, and began to crawl faster and faster down the slanting shaft that leads to the fire in the middle of the earth. and edmund, doing exactly as he had been told, for a wonder, caught the end of the drakling's tail and ran the iron hook through it so that the drakling was held fast. and it could not turn around and wriggle up again to look after its poor tail, because, as everyone knows, the way to the fires below is very easy to go down, but quite impossible to come back on. there is something about it in latin, beginning: "facilis descensus."