Both in the coarse and in the fine woollen manufacture, the machinery employed was much more imperfect in those ancient, than it is in the present times. It has since received three very capital improvements, besides, probably, many smaller ones, of which it may be difficult to ascertain either the number or the importance. The three capital improvements are, first, the exchange of the rock and spindle for the spinning-wheel, which, with the same quantity of labour, will perform more than double the quantity of work. Secondly, the use of several very ingenious machines, which facilitate and abridge, in a still greater proportion, the winding of the worsted and woollen yarn, or the proper arrangement of the warp and woof before they are put into the loom; an operation which, previous to the invention of those machines, must have been extremely tedious and troublesome. Thirdly, the employment of the fulling-mill for thickening the cloth, instead of treading it in water. Neither wind nor water mills of any kind were known in England so early as the beginning of the sixteenth century, nor, so far as I know, in any other part of Europe north of the Alps. They had been introduced into Italy some time before. The consideration of these circumstances may, perhaps, in some measure, explain to us why the real price both of the coarse and of the fine manufacture was so much higher in those ancient than it is in the present times. It cost a greater quantity of labour to bring the goods to market. When they were brought thither, therefore, they must have purchased, or exchanged for the price of, a greater quantity.