If, on the one hand, Senior proved that the net profit of the manufacturer, the existence of the English cotton industry, and England's command of the markets of the world, depend on the last working hour, on the other hand, Dr. Andrew Ure showed, that if children and young persons under years of age, instead of being kept the full hours in the warm and pure moral atmosphere of the factory, are turned out an hour sooner into the heartless and frivolous outer world, they will be deprived, by idleness and vice, of all hope of salvation for their souls.