PRIMROSE OINTMENT FOR BURNS AND ULCERS: Bruise one pound of the leaves of this well-known plant in a mortar, along with half a pound of the flowers; simmer these in an equal quantity of hog's lard, without salt, until the primroses become crisp; after which, the ointment, whilst fluid, must be strained through a coarse sieve. This is an excellent application for obstinate ulcers or burns.
Practical Housewife, 1860