Six or seven different machines are employed in the production of cotton-yarn from raw cotton. All but the last are called “preparation machinery,” and one person waits upon each. The office of this preparation machinery is to form the raw cotton into a thick and tender thread, called a “roving.” The office of the last machine is to twist and draw out the roving into a finer and stronger thread: this operation is called “spinning,” and the spun thread is “yarn.” This machine is called the “hand-mule.” Hand-mules are worked in pairs, each pair requiring the head spinner above-mentioned to direct its operation, and two or more children to place the rovings in the machine, and piece the threads that break. The head spinner, though paid in proportion to the superiority of his work, has always been the one to turn out; and his subordinates must go with him of necessity, however averse they might be to do so. It was not to be borne that the discontents of the comparatively few should derange the whole manufacture, and deprive the many of their bread; and nothing could be more natural than for some expedient to be sought by which the masters and the subordinates might be made independent of the head spinners. Twenty years ago, attempts were made to invent some apparatus which might be attached to the mule, and discharge the spinner’s task. The apparatus first used was either too complex or too uncertain in its operation to answer the purpose; and, as often as it failed, the spinners clapped their hands, believed the manufacture more in their power than ever, and advanced in their demands accordingly. They went somewhat too far in 1824, when they refused very high wages, and drove the Manchester capitalists to vigorous measures of self-defence. The requisite talent was sought and found for the object required; and, early in 1825, a patent for the “self-acting mule” was taken out, nothing being wanting to its efficacy but the simplification which time and practice were sure to bring, and which would lessen its cost so as to qualify it for common adoption. No sooner had it been set to work, and begun to gain reputation, than a great part of the establishment where it was in use was destroyed by fire, and the machine was not heard of for some months. As soon as it began to be again attended to, so great a stagnation of trade took place, that the spirit of the spinner was subdued: the master was unwilling to mortify him in his distress, and all mention of the self-acting mule was dropped. This was very hard upon the patentees, who had been originally forced into the business, and had spent, not only much time and pains, but a great deal of money on the invention. They rightly supposed, however, that the head spinners would give them their turn on the first opportunity. They went on improving and improving their invention, while awaiting another strike on the revival of trade. This happened at the close of 1829; and then