THE WIRE-CARTRIDGE.

The wire-cartridge was invented, in 1828, by Mr. Jenour. It consists of a cylindrical case or network of wire, the meshes of which are somewhat more than an eighth of an inch square; at the lower end the wire partially closes; the wire case is then enveloped in fine paper, and at the upper end a cork wadding, cut so as to fit the gauge of the gun, is affixed, the case is then filled with shot and bone dust. The first cartridges made, though ingenious in construction, were defective in operation. It was a matter of no ordinary difficulty to fabricate them in such a manner that the shot should leave the case at the precise distance required. This at first could not be done so that they might be trusted in every instance; every alternate cartridge might fire well, but the rest would fire irregularly, being liable to ball,—that is, the shot would not leave the case until fifty or sixty yards from the gun, and such cartridges were, of course, not only useless but dangerous. They have been from time to time improved, and almost every difficulty has been overcome. The sporting cartridges now made never ball, they act with a considerable degree of precision and certainty, and that they may be safely trusted may be inferred from the fact that they are often preferred by persons engaged in pigeon matches. Various materials were used experimentally to fill up the interstices between the pellets, but nothing seems to answer so well as the material now used. Another difficulty in their construction presented itself. It was requisite to accommodate them to the various methods of boring used by different gunmakers, and the unequal length of barrels, the object in view being to produce a cartridge that would suit all barrels of the same gauge, and this has been in a great measure, if not wholly, accomplished. The liability to ball, notwithstanding various improvements made in them, was not effectually obviated for many years, during which they were tried, and in many instances prematurely condemned, either from real defects, or from the parties not knowing how to use them. They were not brought to perfection until the year 1837.

The wire-cartridges possess two principal advantages over loose shot; they are propelled with greater velocity, and thrown more evenly. A loose charge is always thrown in patches; the shots of a cartridge, as seen on a target, are comparatively equi-distant from each other.