363. It is somewhat singular that another and a still more remarkable instance of the effect of combination amongst workmen, should have occurred but a few years since in the very same trade. The process of welding the skelps, so as to convert them into gun barrels, required much skill, and after the termination of the war, the demand for muskets having greatly diminished, the number of persons employed in making them was very much reduced. This circumstance rendered combination more easy; and upon one occasion, when a contract had been entered into for a considerable supply to be delivered on a fixed day, the men all struck for such an advance of wages as would have caused the completion of the contract to be attended with a very heavy loss. In this difficulty, the contractors resorted to a mode of welding the gun barrel, for which a patent had been taken out by one of themselves some years before this event. The plan had not then succeeded so well as to come into general use, in consequence of the cheapness of the usual mode of welding by hand labour, combined with some other difficulties with which the patentee had to contend. But the stimulus produced by the combination of the workmen, induced him to make new trials, and he was enabled to introduce such a facility in welding gun barrels by rollers, and such perfection in the work itself, that, in all probability, very few will in future be welded by hand labour. This new process consisted in folding a bar of iron, about a foot long, into the form of a cylinder, with the edges a little overlapping. It was then placed in a furnace, and being taken out when raised to a welding heat, a triblet, or cylinder of iron, was placed in it, and the whole was passed quickly through a pair of rollers. The effect of this was, that the welding was performed at a single heating, and the remainder of the elongation necessary for extending the skelps to the length of the musket barrel, was performed in a similar manner, but at a lower temperature. The workmen who had combined were, of course, no longer wanted, and instead of benefiting themselves by their combination, they were reduced permanently, by this improvement in the art, to a considerably lower rate of wages: for as the process of welding gun barrels by hand required peculiar skill and considerable experience, they had hitherto been in the habit of earning much higher wages than other workmen of their class. On the other hand, the new method of welding was far less injurious to the texture of the iron, which was now exposed only once, instead of three or four times, to the welding heat, so that the public derived advantage from the superiority, as well as from the economy of the process. Another process has subsequently been invented, applicable to the manufacture of a lighter kind of iron tubes, which can thus be made at a price which renders their employment very general. They are now to be