FOOTNOTE:
[1] Method of preparing jet powder.
Pound in a copper mortar your jet, which must have been bruised a little with a hammer; when it is well pounded, it must be sifted through a sieve, and also through a piece of muslin. Keep that powder, which cannot be too fine, in a little box, to use it when occasion may require: take a pinch of it either with your fingers or with a piece of paper; then scatter it on the card, and it will stick only in those places that have been touched by the roll of pomatum, and may be taken off very easily by the rubbing against the carpet, when you will push the hand of the person who covers the card, without the card being soiled in the least by it.