The constant association of the poor and the criminal class has deadened in the former nearly all sense of right and wrong. In the words of one of them, 'they can't afford to be particular about their choice of neighbours.' I was but the other day in a room in this district occupied by a widow woman, her daughters of seventeen and sixteen, her sons of fourteen and thirteen, and two younger children. Her wretched apartment was on the street level, and behind it was the common yard of the tenement. In this yard the previous night a drunken sailor had been desperately maltreated, and left for dead. I asked the woman if she had not heard the noise, and why she didn't interfere. 'Heard it?' was the reply; 'well, we ain't deaf, but they're a rum lot in this here house, and we're used to rows. There ain't a night passes as there ain't a fight in the passage or a drunken row; but why should I interfere?'Taint no business of mine.' As a matter of fact, this woman, her grown-up daughters, and her boys must have lain in that room night after night, hearing the most obscene language, having a perfect knowledge of the proceedings of the vilest and most depraved of profligate men and women forced upon them, hearing cries of murder and the sound of blows, knowing that almost every crime in the Decalogue was being committed in that awful back yard on which that broken casement looked, and yet not one of them had ever dreamed of stirring hand or foot. They were saturated with the spirit of the place, and though they were respectable people themselves, they saw nothing criminal in the behaviour of their neighbours. For this room, with its advantages, the widow paid four and sixpence a week; the walls were mildewed and streaming with damp; the boards as you trod upon them made the slushing noise of a plank spread across a mud puddle in a brickfield; foul within and foul without, these people paid the rent of it gladly, and perhaps thanked God for the luck of having it. Rooms for the poor earning precarious livelihoods are too hard to get and too much in demand now for a widow woman to give up one just because of the trifling inconvenience of overhearing a few outrages and murders. One word more on this shady subject and we will get out into the light again. I have spoken of the familiarity of the children of the poor with all manner of wickedness and crime. Of all the evils arising from this one-room system there is perhaps none greater than the utter destruction of innocence in the young. A moment's thought will enable the reader to appreciate the evils of it. But if it is bad in the case of a respectable family, how much more terrible is it when the children are familiarized with actual immorality! Wait outside while we knock at this door. Knock, knock!--No answer! Knock, knock, knock! A child's voice answers, 'What is it?'