361. The effects arising from combinations amongst the workmen, are almost always injurious to the parties themselves. There are numerous instances, in which the public suffer by increased price at the moment, but are ultimately gainers from the permanent reduction which results; whilst, on the other hand, the improvements which are often made in machinery in consequence of 'a strike' amongst the workmen, most frequently do injury, of greater or less duration, to that particular class which gave rise to them. As the injury to the men and to their families is almost always more serious than that which affects their employers, it is of the utmost importance to the comfort and happiness of the former class, that they should themselves entertain sound views upon this question. For this purpose a few illustrations of the principle which is here maintained, will probably have greater weight than any reasoning of a more general nature, though drawn from admitted principles of political economy. Such instances will, moreover, present the advantage of appealing to facts known to many individuals of those classes for whose benefit these reflections are intended. 362. There is a process in the manufacture of gun barrels for making what, in the language of the trade, are called skelps. The skelp is a piece or bar of iron, about three feet long, and four inches wide, but thicker and broader at one end than at the other; and the barrel of a musket is formed by forging out such pieces to the proper dimensions, and then folding or bending them into a cylindrical form, until the edges overlap, so that they can be welded together. About twenty years ago, the workmen, employed at a very extensive factory in forging these skelps out of bar-iron, 'struck' for an advance of wages; and as their demands were very exorbitant, they were not immediately complied with. In the meantime, the superintendent of the establishment directed his attention to the subject; and it occurred to him, that if the circumference of the rollers, between which the bar-iron was rolled, were to be made equal to the length of a skelp, or of a musket barrel, and if also the groove in which the iron was compressed, instead of being of the same width and depth throughout, were cut gradually deeper and wider from a point on the rollers, until it returned to the same point, then the bar-iron passing between such rollers, instead of being uniform in width and thickness, would have the form of a skelp. On making the trial, it was found to succeed perfectly; a great reduction of human labour was effected by the process, and the workmen who had acquired peculiar skill in performing it ceased to derive any advantage from their dexterity.