The wax and soap are melted together. The lampblack is added then. All is rubbed down fine on a hot plate, and then placed on the fire again till it is fluid once more. Then it is poured on a stone plate coated with a little oil, so that it forms a cake of about one eighth inch thickness. When this has cooled a little, it is cut into thin pieces and put away till needed.

(2)Wax8parts
Soap4parts
Lampblack2parts

Burn the wax till one half is consumed, then melt the soap with it, and treat the mixture as before.

(3)Wax4parts
Spermaceti4parts
Soap4parts
Lampblack2parts

The first three materials are melted together, the lampblack is added, and then the whole is treated as before.

(4)Wax8parts
Spermaceti4parts
Soap4parts
Lampblack2parts

The wax is to be half burned away, then the spermaceti and soap are to be melted into it, and the whole treated as the other formulas.

(5)Shellac4parts
Wax8parts
Soap5parts
Lampblack3parts

The shellac is to be completely dissolved with the wax by means of combustion after which the rest of the treatment is the same as before.