In ancient times these recognitions, so frequently exhibited on the stage, were not improbable. The customs of exposing children, and of reducing prisoners of war to slavery—the little connection or intercourse between different countries, from the want of inns or roads—and the consequent difficulty of tracing a lost individual—rendered such incidents, to us apparently so marvellous, of not unusual occurrence in real life. In Greece, particularly, divided as it was into a number of small states, and surrounded by a sea infested with pirates, who carried on a commerce in slaves, free-born children were frequently carried off, and sold in distant countries. By the laws of Athens, marriage with a foreigner was null; or, at least, the progeny of such nuptials were considered as illegitimate, and not entitled to the privileges of Athenian citizens. Hence, the recognition of the supposed stranger was of the utmost importance to herself and lover. In real life, this recognition may have been sometimes actually aided by ornaments and trinkets. Parents frequently tied jewels and rings to the children whom they exposed, in order that such as found them might be encouraged to nourish and educate them, and that they themselves might afterwards be enabled to discover them, if Providence took care for their safety(248). Plots, accordingly, which hinged on such circumstances, were invented even by the writers of the old Greek comedy. One of the later pieces of Aristophanes, now lost, entitled _Cocalus_, is said to have presented a recognition; and nearly the same sort of intrigue was afterwards employed by Menander, and, from his example, by Plautus and Terence. From imitation of the Greek and Latin comedies, similar incidents became common both in dramatic and romantic fiction. The pastoral romance of Longus hinges on a recognition of this species; and those elegant productions, in which the Italians have introduced the characters and occupations of rural life into the drama, are frequently founded on the exposure of children, who, after being brought up as shepherds by reputed fathers, are recognised by their real parents, from ornaments or tokens fastened to their persons when abandoned in infancy or childhood.