[79] and, indeed, they say that there are altogether three generic manners of corruption, one which arises from division, another which proceeds from a destruction of the distinctive quality which holds the thing together, and the third from confusion; therefore the things which consist of a union of separate members, such as flocks of goats, herds of oxen, choruses, armies; or, again, bodies which are compounded of limbs joined together, are dissolved by disjunction and separation. But wax, when stamped with a new impression, or softened before being remodelled so as to present a new and different appearance, is corrupted by a destruction of the distinctive quality which previously held it together. Other things are corrupted by confusion, as the medicine which the physicians call tetrapharmacon, for the powers of the drugs brought together and combined were destroyed in such a manner as to produce one perfect medicine of especial virtue.