text:  That the causes which have now been mentioned are the true sources of the rapid progress of crime and general demoralization of our manufacturing and mining districts must be evident to all from this circumstance well known to all who are practically conversant with the subject but to a great degree unattended to by the majority of men and that is --that the prodigious stream of depravity and corruption which prevails is far from being equally and generally diffused through society even in the densely peopled districts where it is most alarming but is in a great degree confined to the _very lowest class_