[197] And as I imagine these four ingredients of which the entire perfume is composed are emblems of the four elements of which the whole world is made; he likens the stacte to water, the onycha to land, the galbanum to the air, and the pure transparent frankincense to fire; for stacte, which derives its name from the drops (σταγόνες) in which it falls is liquid, and onycha is dry and earth-like, the sweet smelling galbanum is added by way of giving a representation of the air, for there is fragrance in the air; and the transparency which there is in frankincense serves for a representation of fire.