ground-floor will admit acquaintance with him to each other, although, if the truth were known, each of them knows something--for each of them has been through his door; and I will answer for one of them, at least, that he has accompanied the Undesirable upon more than one midnight excursion, and has enjoyed himself enormously. If you could get either of these two alone in a confidential mood you might learn some curious particulars of their coy neighbour; and not the least curious would be the effect of his changing the glass of the first floor windows. It seems that he had that done directly he got into his rooms, saying that it was impossible to see out of such windows, and that a man must have light. Where he got his glass from, by whom it was fitted, I can't tell you, but the effect of it is most extraordinary. The only summary account I feel able to give of it at the moment is that it transforms the world upon which it opens. You look out upon a new earth, literally that. The trees are not trees at all, but slim grey persons, young men, young women, who stand there quivering with life, like a row of Caryatides--on duty, but tiptoe for a flight, as Keats says. You see life, as it were, rippling up their limbs; for though they appear to be clothed, their clothing is of so thin a texture, and clings so closely that they might as well not be clothed at all. They are eyed, they see intensely; they look at each other so closely that you know what they would be doing. You can see them love each other as you watch. As for the people in the street, the real men and real women, as we say, I hardly know how to tell you what they look like through the first floor's windows. They are changed of everything but one thing. They occupy the places, fill the standing-room of our neighbours and friends; there is a something about them all by which you recognise them--a trick of the hand, a motion of the body, a set of the head (God knows what it is, how little and how much); but for all that--a new creature! A thing like nothing that lives by bread! Now just look at that policeman at the corner, for instance; not only is he stark naked--everybody is like that--but he's perfectly different from the sturdy, good-humoured, red-faced, puzzled man you and I know. He is thin, woefully thin, and his ears are long and perpetually twitching. He pricks them up at the least thing; or lays them suddenly back, and we see them trembling. His eyes look all ways and sometimes nothing but the white is to be seen. He has a tail, too, long and leathery, which is always curling about to get hold of something. Now it will be the lamp-post, now the square railings, now one of those breathing trees; but mostly it is one of his own legs. Yet if you consider him carefully you will agree with me that his tail is a more expressive remnant of the man you have always seen there than any other part of him. You may say, and truly, that it is the only recognisable thing left.