in medicine. See TROCHE.

AROIS, a province of the French Netherlands, situated between Flanders and Picardy.

ARVALES fratres, in Roman antiquity, a college of twelve priests, instituted by Romulus, who himself made one of the body: they assisted in the sacrifices of the ambervalia, offered annually to Ceres and Bacchus, for the prosperity of the principal fruits of the earth, viz., those of corn and wine.