The ingenuity of Hargreaves, Arkwright, and Crompton had been exercised to provide the weaver with yarn, and had now indeed provided him with more yarn than he could use; the spinster had beaten the weaver, just as the weaver had previously beaten the spinster; and the making of cotton cloth seemed likely to continue sluggish, because the yarn could not be woven any faster than a skilled workman could weave it with Kay's improved fly-shuttle. In the summer of 1784, a Kentish clergyman named Edmund Cartwright, being in conversation with some Manchester gentlemen, one of whom observed that, "as soon as Arkwright's patent expired so many mills would be erected and so much cotton spun that hands would never be found to weave it," replied, "Arkwright must then set his wits to work to invent a weaving-mill." Notwithstanding the unanimous opinion expressed by the Manchester gentlemen, that such a weaving-machine was wholly impracticable, the clergyman himself within three years had invented and brought into successful operation the "_power-loom_." Subsequent inventors improved the idea which Cartwright originated, and before 1834 there were not less than 100,000 power-looms at work in Great Britain alone.[3] Substantially the same machinery invented for carding and spinning and weaving cotton was very shortly and successfully applied to the carding and spinning and weaving of wool, because the wisdom of Nature imparted to them both the same sort of tenacity of fibre, the same capacity in that fibre to be spun into a thread of indefinite length by means of the little loops or kinks easily interlocking contiguous fibres into a single thread, which two obvious resemblances gave an identical name to the animal and vegetable products otherwise so different from each other. The spirit of Invention, one of the chief conditions in the production of material commodities, thus simply illustrated along the line of a single manufacture, may serve us for a sample of similar improvements taken and taking place in scores upon scores of other lines of effort and production. The principle is the same in all cases past and present and still to come, namely this, to throw the strain from the mind and muscles of men upon the forces and agencies of free Nature, with which the world around us is crowded in our behalf, and which are waiting to slave in the service of mankind without rest and without fatigue,--without money and without price.