The application of knowledge to the arts, of science to manufactures, so far from diminishing, has, hitherto at least, had the most ruinous possible effect in increasing this fatal tendency of great capital and extensive manufactured industry upon mankind. Watt, Arkwright, Crompton--those giants of intellectual power, whose discoveries have augmented tenfold, often an hundredfold, the productive powers of manufacturing labour--have been the worst enemies that the happiness and morals of the working manufacturers ever knew. For what is it that, by means of great capital, working with the powers which their immortal discoveries have conferred, manufacturing industry has become? Why, it has all, or nearly all, run into huge mills, or other establishments, in which machinery, at a cost of thirty, forty, or fifty thousand pounds, is erected, and a crown of needy women and children are employed, in ordinary times, at the lowest wages which can support existence, with a few men at a guinea or twenty-five shillings a-week, to direct and superintend their labours. It need not be told what the habits of such a crowd of young women, most of them from fourteen to twenty, must in general be. These evils in manufacturing districts are universally felt and complained of; but it is not equally generally admitted, that they arise invariably, and, as matters at present stand, inevitably, from that very extension of science and mechanical power to the arts, which is, in the view of the increase of national wealth, so just a subject of exultation, and which it is so much the object, both of legislative enactment and of individual ingenuity, to augment and extend. Yet, is not the crushing effect of these great discoveries on the welfare of the labouring classes, as manifest as their elevating influence on the fortunes of their employers, and the sum total of the produce of national manufactured industry? On no other principle is it possible to explain the prodigious accumulation of wealth in one class of the British empire, and of degradation, misery, crime and destitution in the other, and far more numerous classes.