How is the Cotton separated from the seed? By machines called _cotton gins_, of which there are two kinds; the _roller-gin_, and the _saw-gin_. In the former, the cotton, just as gathered from the plant, is drawn between two rollers, placed so closely together as to permit the passage of the cotton, but not of the seeds, which are consequently left behind. In the _saw-gin_, the cotton is placed in a receiver, one side of which consists of a grating of parallel wires, about an eighth of an inch apart; circular saws, revolving on a common axis between these wires, entangle in their teeth the cotton, and draw it from the seeds, which are too large to pass between the wires. How is it made into Calico, &c.? The cotton having been separated from the seed, is spun by a machine for the purpose. It is next woven, then dressed, and printed. What is Cloth? The word, in its general sense, includes all kinds of stuffs woven in the loom, whether the threads be of wool, cotton, hemp, or flax. To what is it more particularly applied? To a web or tissue of woollen threads. _Web_, any thing woven. What is Wool? The covering or hair of sheep. To prepare it for the weaver, it is first shorn, washed, and dried, then carded or combed by machinery into fibres or threads: formerly this was always performed by the hand, by means of an instrument, called a comb, with several rows of pointed teeth; this, though not much used now, is still occasionally employed, except in large factories. This combing is repeated two or three times, till it is sufficiently smooth and even for spinning. Spinning or converting wool, or cotton, silk, &c. into thread, was anciently performed by the distaff and spindle: these we find mentioned in sacred history, and they have been used in all ages, and in all countries yet discovered. The natives of India, and of some other parts of the world, still employ this simple invention. What was the next improvement? The invention of the hand-wheel. In 1767, a machine called the spinning-jenny was invented by a weaver named Hargreaves; but the greatest improvement in the art of spinning was effected by Mr. Arkwright, in 1768: these two inventions were combined, and again improved upon in 1776; so that by the new plan, the material can be converted into thread in a considerably shorter space of time than in the ancient mode; leaving to man merely to feed the machine, and join the threads when they break. The sheep, whose wool forms the material for nearly all woollen clothing, came originally from Africa. Does weaving differ according to the material used? The principle of weaving is the same in every kind of fabric, and consists in forming any kind of thread into a flat web, or cloth, by interlacing one thread with another; the various appearances of the manufacture arise as much from the modes in which the threads are interwoven, as from the difference of material.