In the cotton manufacture, which from its immense amount possesses the means of rewarding the smallest improvement, invention has been at work, and most successfully, to make machines, that make machines, that make the cotton thread. There is a part of the machinery used in cotton-spinning called a reed. It consists of a number of pieces of wire, set side by side in a frame, resembling, as far as such things admit of comparison, a comb with two backs. These reeds are of various lengths and degrees of fineness; but they all consist of cross pieces of wire, fastened at regular intervals between longitudinal pieces of split cane, into which they are tied with waxed thread. A machine now does the work of reed-making. The materials enter the machine in the shape of two or three yards of cane, and many yards of wire and thread; and the machine cuts the wire, places each small piece with unfailing regularity between the canes, twists the thread round the cane with a knot that cannot slip, every time a piece of wire is put in, and does several yards of this extraordinary work in less time than we have taken to write the description. There is another machine for making a part of the machine for cotton-spinning, even more wonderful. The cotton wool is combed by circular cards of every degree of fineness; and the card-making machine, receiving only a supply of leather and wire, does its own work without the aid of hands. It punches the leather--cuts the wire--passes it through the leather--clinches it behind--and gives it the proper form of the tooth in front--producing a complete card of several feet in circumference in a wonderfully short time. All men feel the benefit of such inventions, because they lessen the cost of production. The necessity for them always precedes their use. There were not reed-makers and card-makers enough in England to supply the demands of the cotton machinery; so invention went to work to see how machines could make machines; and the consequent diminished cost of machinery has diminished the price of clothing. [22] See p. 107. CHAPTER XVII. The woollen manufacture--Divisions of employment--Early history--Prohibitory laws--The Jacquard loom--Middle-age legislation--Sumptuary laws--The silk manufacture-- Ribbon-weaving--The linen manufacture--Cloth-printing-- Bleaching.