Chinese Fire.
10. Chinese Fire.—The principal ingredient which forms this beautiful composition, has been already described in article 6, section 2, under the name of Iron-sand; what we have to give in this place is, the proportion in which it is used with the other ingredients; the composition is rendered into two particular distinctions, namely, red and white, and each of them made with different proportions of the ingredients according to the calibres of the cases intended to be filled with it, which calibre is estimated by the weight of lead balls, which will just fill out their diameter, as was taught in the Article Gerbes.