Amentaceæ

pl. [See AMENT.] ( Bot.) The name formerly given by De Ju ieu to the plants of the ord. Betulaceæ, q.v. Amenta'ceo us, a. ( Bot. ) Producing or bearing aments. Amen'tia, n. [Lat. a, priv., and mens, ment is, mind.j (Med.) Imbecility of intellect, by which the relations of things are either not perceived, or not recollected. It is a nervous disease. When it originates at birth, it is called amentia con Fig. 102. -BETULA PAPYRACEA. (The Paper Birch.) genita , natural stupidity; when from the infirmities of age, amentia senilis , dotage or childishne ; and when from some accidental cause, amentia acquis it a .