physics, an appellation given to whatever is extremely small, fine, and delicate; such as the animal-spirits, the effluvia of odorous bodies, &c. are supposed to be.

Subularia, Rough-leaved Alyssum, or Awlwort, in botany: A genus of plants belonging to the class of tetradynamia, and order of filiculosa; and in the natural order ranging under the 39th order, filiculose. The filicula is entire and ovate; the valves are ovate, concave, and contrary to the partitions. The style is shorter than the filicula. There is only one species, the aquatica, which is a native of Britain. It is about an inch high. The leaves are awl-shaped, and grow in clusters round the root. The stalk is naked, and produces four or five small white flowers growing alternately on short footstalks. It flowers under water, whereas most aquatic plants emerge above water at the time of flowering. The Author of Nature has, however, carefully prevented the tender flower from receiving any injury from the water, by making the petals close, and form themselves into a kind of arch. This plant grows on the borders of the Highland lakes, in Loch Tay, in Scotland, also in Wales and Ireland.

Subulated, something shaped like an awl.

Succedaneum, in pharmacy, denotes a drug substituted in the place of another.