Under M. Delvigne's system, however, the ball was not always well forced into the grooves. The _tige_, too, made cleaning difficult: it often got crooked, and it sometimes broke off. A M. Tamisier did something toward removing the former difficulty by cutting very shallow grooves on the ball itself. The other called forth the ingenuity of the now famous Minié, who made his first appearance in 1847-1848, and whose name has attained the same kind of lethal immortality with the names of Shrapnell, Congreve and Rodman. M. Minié abandoned the _tige_ entirely. He scooped out the base of the ball and inserted into it an iron cup. This cup was driven into the ball by the explosion, and forced the soft lead into the grooves. The leading objection to the Minié ball in this form was that the device did its work too thoroughly. The iron was often driven so deep into the lead as to tear off the solid point and scatter the whole projectile into two or three pieces. This mitrailleuse-like distribution of disrupted spheres or leaden asteroids was obviated by the abandonment of the iron cup, the powder being left to act on the lead itself. Two or three channels cut around the neck of the bullet helped to keep the point in line, and aided at the same time the fastening of the cartridge. Thus came its final metamorphosis to the buzzing little torment that has been at intervals for the last twenty years flying over all the continents and perplexing the nations. It was not till 1852 that the Enfield rifle was settled on as the standard weapon of the British army. Machinery and machinists were imported for its fabrication from the United States, the appliances of our government armories being copied, and Colonel Bruton, of the Harper's Ferry Works, employed to set them going. Prior to that time all firearms of public or private manufacture, in England, had been made by hand, the interchangeability of all the parts of any given number of guns being an end accomplished in this country alone. The advantage of having every corresponding detail of each piece a fac simile of the same part in all the firelocks of an army must have been perceived from the time when such weapons were first invented; and nothing but the most inveterate conservatism, or the steadiest opposition of that stamp which mobbed threshing-machines and the spinning-jenny, could have so long staved off its practical adoption. Once awakened, however, England became, as she usually does, active, innovating and experimental enough. Rifled cannon, breech-loaders and armored ships--all the legitimate offspring of the Venetian barrel and its American employment--have kept her ever since in a ferment of boards, commissions and target-firing. But these would carry us beyond our prescribed limit into a boundless field of inquiry and description. It would be like passing from a notice of the tubular boiler of Stephenson's Rocket to a discussion of the vast railway system it begot.