From the 24-pounder to the 9-pounder Rocket, inclusive, a description of case shot Rocket is formed of each nature, armed with a quantity of musket or carbine balls, put into the top of the cylinder of the Rocket, and from thence discharged by a quantity of powder contained in a chamber, by which the velocity of these balls, when in flight, is increased beyond that of the Rocket’s motion, an effect which cannot be given in the spherical case, where the bursting powder only liberates the balls. All Rockets intended for explosion, whether the powder be contained in a wrought iron head or cone, as used in bombardment: or whether in the shell above mentioned, for field service, or in the case shot, are fitted with an external fuse of paper, which is ignited from the vent at the moment when the Rocket is fired. These fuses may be instantaneously cut to any desired length, from 25 seconds downwards, by a pair of common scissars or nippers, and communicate to the bursting charge, by a quickmatch, in a small tube on the outside of the Rocket; in the shell Rocket the paper fuse communicates with a wooden fuse in the shell, which, being cut to the shortest length that can be necessary, is never required to be taken out of the shell, but is regulated either by taking away the paper fuse altogether, or leaving any part of it, which, in addition to the fixed and permanent wooden fuse in the shell, may make up the whole time of flight required. By this system, the arrangement of the fuse in action is attended with a facility, security, and an expedition, not known in any other similar operations. All the Rocket sticks for land service are made in parts of convenient length for carriage, and jointed by iron ferules. For sea service they are made in the whole length. The 24-pounder shell and case shot Rockets are those which I propose issuing in future for the heavy field carriages; the 18-pounder shell and case shot for the light field carriages; the 12-pounder for the mounted ammunition of cavalry; the 9 and 6-pounders for infantry, according to the different cases already explained. Fig. 1, 2, 3, 4, 5, 6, 7, 8, and 9, represent the different implements used for jointing the sticks, or fixing them to the Rocket, being of different sizes, in proportion to the different natures to which they belong. They consist of hammers, pincers, vices, and wrenches, all to accomplish the same object, namely, that of compressing the ferule into the stick, by means of strong steel points in the tool, so as to fix it immoveably. The varieties are here all shewn, because I have not hitherto decided which is the preferable instrument.