The seed of Cydonia vulgaris.

Characters. - About a quarter of an inch (6 millimetres) long, oval, or oblong, triangularly compressed, brown, covered with a whitish mucilaginous epithelium, causing the seeds of each cell to adhere. With water the seeds swell up, and form a mucilaginous mass. The unbroken seeds have an insipid taste.

Composition. - It contains a large amount of mucilage.

Preparation.

Mucilago Cydonii (cydonium 2, water 100, macerate for half an hour, and strain through muslin) ........................................................................

Dose.

ad lib.

Use. - It is useful as a bland demulcent preparation to relieve irritation of mucous surfaces.