Pots a aigrettes do not differ from fire pots, except that they are made larger and that they have a jet in the center, which at the finish gives its fire to the garniture. The case has commonly 6 inches of interior diameter and about 16 inches height, and 6 or 7 lines of thickness. The case is mounted upon a base of rounded wood, which extends 1 inch within the case. The case is firmly fastened to this by the use of tacks and glue. This base has a shoulder 15 lines wide. Its thickness for that part entering the case should be somewhat in excess of 2 inches, and the shoulder should have a thickness of 2 inches. (Pl. V, figs. 3,4, and 8.)
The garniture is made up of a powder bag containing 9 ounces of composition similar to that used in loading fire pots, above the center of which is fixed a jet, charged with Chinese fire. The bag is pierced with several awl holes. A little powder is scattered over it, and the serpents, or other forms of fireworks, are then placed upon it. Several torn sheets of paper are stuffed into the pot, in order to hold the whole in position and to prevent the garniture from shifting. The pot is closed with a disk of pasteboard, having a hole in the middle, through which the jet passes, to extend out beyond the pot. A circle is drawn about this hole in the disk, and then with the scissors the pasteboard is cut in eight straight lines from the center of the circle to its circumference. The eight pointed sections thus secured are pressed upward, and, after the jet is in position, are held firmly against it by pasting over them a paper band. The rim of the disk is snipped and bent down over the sides of the case, where it is held firmly by a pasted paper band.
These pots a aigrettes have a pleasing effect due to the quantity of fire thrown out by them after the jet has ended its display of Chinese fire.