with regard to the organ, is an impression made on the nose, by little particles continually exhaling from odorous bodies: with regard to the object, it is the figure and disposition of odorous effluvia, which striking on the organ, excite the sense of smelling: and with regard to the foul, it is the perception of the impression of the object on the organ, or the affection in the soul resulting therefrom.

The principal organs of smelling are the nostrils, and the olfactory nerves; the minute ramifications of which latter are described throughout the whole concave of the former. See Anatomy, p. 293.