'Why do they all go so fast?' said the fairy.

'Oh, for many reasons. Competition, struggle for existence, and all that. They are in a normal condition, in that street, of having trains to catch, and not having any time to catch them in. Besides, they are dragon-worshippers, most of them, and it is part of their religion to walk as fast as they can, not only through Cheapside but through life. The one who can walk fastest, and knock down the greatest number of other people, gets a prize.'

'Who are the big men in black robes who stand at corners, and look as if everything belonged to them? Are they the owners of the City?'

'They are policemen,' said the Owl. 'Products,' he went on learnedly, 'of the higher civilisation, evolved to put the lower civilisation into prisons.'

'What are prisons?'

'A kind of hothouses,' said the Owl, 'for the culture of feeble moral principles that the Struggle for Existtence has been too much for. They are a wonderful system. The weak morality is supplied with bread and water and a cell to develop in, and it is exercised on a treadmill, and allowed to expand and pick oakum, and so it is turned into a beautiful plant of virtue.'

'What do they do with it then?'

'Then they let it run wild, unless it comes across a Home Missionary, or a School Board, or Dr. Barnardo, and gets trained.'

'Oh!' said Queen Mab. 'Are there many of these hothouses?'

'A good many. You see, such a number of the members of the lower portion of the higher civilisation have moral principles that need training. The moral principle is the latest product of evolution, or so the professor says, and evolution has not yet got quite into the way of always turning it out first class. Like everything else, it wants practice. Some moral principles are excellent; but others are really bungles, and require periodical prison culture. At present we need policemen for the transplanting; but it is hoped that, in the course of an era or two, the automatic method will be so much further developed that a member of the higher civilisation who gets very drunk, or steals, will put himself to prison at once, by reflex action. I told you about that: it is a lengthy subject; but the kingfisher and I quite mastered it one day, and I daresay you will. It is much easier than portions of the Thirty-nine Articles.'