Fire-globes with projected cases are made thus; your globe being made with fourteen holes bored in it as usual, six in every hole, except one, a case, and let each case project from the globe two thirds of its length; then cloath all the cases with leaders, so that they may all take fire at the same time. Fire-globes are supported by a pintle, made to fit the hole in which there is no case. To thread and join Leaders, with the method of placing them on different Works. Joining and placing of Leaders is a very essential part of fireworks, as it is on the leaders, that the performance of all complex works depend; for which reason I shall endeavour here to explain the method of conducting pipes of communication, in as plain a manner as possible. Your works being ready to be cloathed, proceed thus; cut your pipes of a sufficient length to reach from one case to the other, then put in the quick match, which must always be made to go in very easy; when the match is in, cut it off within about an inch of the end of the pipe, and let it project as much at the other end; then fasten the pipe to the mouth of each case with a pin, and put the loose ends of the match into the mouths of the cases, with a little meal powder; this being done to all the cases, paste over the mouth of each two or three bits of paper; the preceding method is used for large cases, and the following for small cases and illuminations; first thread a long pipe, then lay it on the tops of the cases, and cut a bit off the under side, exactly over the mouth of each case, so that the match may appear; then pin the pipe to every other case, but before you put on the pipes, put a little meal powder in the mouth of each case; if the cases thus cloathed be port-fires on illuminated works, cover the mouth of each case with a single paper; but if they are choaked cases, situated so that a number of sparks from other works may fall on them before they are fired, secure them with three or four papers, which must be pasted on very smooth, that there may be no creases for the sparks to lodge in, which often set fire to the works before their time; avoid, as much as possible, placing the leaders too near together, or one across the other so as to touch, as it sometimes happens that the flash of one will fire the other; therefore if your works should be so formed, that the leaders must cross or touch, be sure to make them very strong, and secure them well at the joints and at every opening. When a great length of pipe is required, it must be made by joining several pipes together, in this manner; having put on one length of match as many pipes as it will hold, paste paper over every joint; but if a still greater length be required, more pipes must be joined, by cutting off about an inch of one side of each pipe near the end, and laying the quick match together, and tieing them fast with small twine; after which, cover the joining with pasted paper.