40. There are two sorts of this fire which are known by the names _red_
and _white_. The red is that which contains charcoal, and _therefore has
some red sparks intermixed with those produced by the iron_; the white
is that _the sparks of which are produced by the iron only_. It is my
intention to give several formulas for this fire, in order that my
readers may select for themselves, and use that which they find most
successful.
No. 1.
Meal-powder 16 parts
Nitre 16 „
Sulphur 4 „
Charcoal (No. 2) 4 „
Iron borings 14 „