Take 3 inches of a ⁶/₈ or ³/₈ rocket case. Fix, in one end, a cork, half an inch long; put in 2 inches of F grain powder; on this, another cork. Wind string tightly round it, lengthwise, 6 or 8 folds, side by side; bend it to a right angle, and wind 6 or 8 more folds; and so on, till covered; then wind crosswise; and again, at right angles, as in fig. 74. Dip it into melted glue, and put by to dry. When dry, make a bradawl hole through one part, to reach the powder. Make sure of this, by inverting it, and letting a little drop out. Insert a short port-fire, having a piece of match at the bottom, and touch-papered at the top.

Another Method.

Take a rocket case, 5 inches long, and unchoked. Put in one solid inch of plaster of paris. When this is dry, pour in 3 inches of F grain-powder; on this put another solid inch of plaster of paris. When dry, wind string tightly round it, up and down the cylindrical part, not the ends, till of two thicknesses. Paint the string over with melted glue. Make a bradawl hole in the middle of one side; fasten to it a squib, without a bang, having a piece of quickmatch at the end, to enter the hole. Cover the joining with two layers of pasted paper. On the other side, below, fasten a short piece of deal, like a rocket stick, with a point, to put into the ground, fig. 72. After lighting the touchpaper, remove to a distance; as bits of string are likely to get driven into the face, on the explosion.

To fire a salute with maroons, at regular intervals of time. Charge a port-fire, and saw it into inch lengths; envelope each in a piece of double-crown, 3 inches broad, and long enough to go thrice round the port-fire. Hang the maroons to hooks, or otherwise suspend them, on a frame, a foot distance from each other, as a, b, c, fig. 75. Underneath them fasten, with binding screws, or tie to nails, the port-fires x, y. Connect the port-fires with one another, and with the maroons, by leaders, in the usual way. On lighting at w, the first maroon explodes, and the first port-fire catches; this, having burnt, lights the second maroon and the second port-fire; and the port-fires being of the same length, the intervals of time between the explosions of the maroons will be the same.