Hargreaves, and this was at length brought to work as many as eighty spindles. The ingenious Hargreaves had ample opportunity for practical study of the “unemployed” question; for the spinners, some of whom were forced into idleness by the new invention, broke into his house and destroyed his machine. Shortly after, there was a general rising over industrial Lancashire: the poor hand-workers, whose prophetic souls were evidently dreaming on things to come, scouring the country and breaking in pieces every carding and spinning machine they could find. Progress by differentiation, however, heeded not the second sight of Lancashire workers. In 1769, Arkwright contrived the spinning frame, and obtained his patent for spinning with rollers. In 1775, Crompton, of Bolton, invented the mule-jenny, enabling warps of the finest quality to be spun. In 1792, further improvements in this machine were made by Pollard, of Manchester, and Kelly, of Glasgow. In 1785, steam was first applied to the spinning of cotton in Nottinghamshire. In 1784 the Rev. E. Cartwright, of Kent, invented power-loom weaving, and completed and patented his invention in August, 1787. Here, then, within a period of about forty years, was a series of mechanical inventions which had the effect of absolutely changing the method of production, and enormously increasing the output; of dividing the labor of producing, which had formerly been effected by a single family within the walls of a single room, between scores and hundreds of people, each of whom only undertook a single process in a complex operation; of massing together hundreds of thousands of people under new conditions; of bringing a heretofore isolated district into intimate relations with distant foreign lands: and of separating the work of spinning or weaving from the ownership of the instruments by whose aid the work was done. The independent weaver was gone; or rather he was subjected, like an amœba, to a process of fission, but with this difference: that whereas the amœba produces by fission other similar amœbæ, the weaver was differentiated into a person called an employer and another called an employé or “hand.” Multiply this “hand” by thousands, and we get the mill or factory, divided into departments, each with its special detail of work, each detail fitting into all the rest, each machine taking up the work where the last machine left it, and each contributing its share to the joint product. Multiply the employer; add enormously to the aggregate of his capital; remove the barrier of national frontiers from his operations; relieve him of the duty of personal supervision; and we get the joint-stock capitalist.