“5th. Great injury to the education of the poor, which is constantly neutralized in its good effects by the neglect and evils they see around them. The same observation applies to the inestimable advantages of religion and of attendance on religious worship. “6th. Great discontent in some, and sluggish apathy in others, producing recklessness of conduct, indifference, and want of attachment to the institutions of our country. “7th. The loss in the humbler classes of the cheapest, best and most enduring pleasures, viz., those arising from the kindly influence of the domestic relations between husbands and wives, parents and children, brothers and sisters--this pure source of happiness derived from mutual kindness, attachment and good offices--is, amid the hardening and disgusting scenes described, almost destroyed. “Amid such scenes, the children become hardened, careless of cleanliness, unused to order, and all the benefits derived from the best education which may be given, is destroyed by the constant evil examples they see around their homes. This is especially the case with the female sex, who, if early tainted by the disgusting scenes existing in the places described, and by the want of all decency and self-respect there exhibited, become at a future day, the nursing mothers of vice and wretchedness, instead of inculcating the household virtues.” The sameness of the causes of diseases and of crime, are clearly indicated by the Rev. Mr. Clay in his report in the borough of Preston, as where he says:-- “A map of the town has been made, shaded in those districts which are ill ventilated, drained and cleaned; the increased depth of tint indicating a proportionate degree of dirtiness, &c. The number of deaths in the respective streets is also given, every blue spot representing a death from fever or epidemic disease, and the red spots showing the frequency of death from other disorders. The residences of persons charged with offences during the last year are also indicated, and the whole tends to show, that dirt, disease and crime are concurrent.” _Overcrowding and Defective Ventilation._--Dr. Southwood Smith, in his evidence before the commissioners for “_Inquiring into the state of large towns and populous districts_,” adduces the following painful, but yet instructive observations. We reproduce them here, not merely as a warning against a remote, or even a threatened evil, but with the hope of stimulating our fellow-citizens to the adoption of such measures as shall eradicate similar nuisances too near their own doors.