The Nemedian sacrifice to the Fomorians is said to have been two-thirds of their children and of the year's supply of corn and milk[810]--an obvious misunderstanding, the victims really being offered to obtain corn and milk. The numbers are exaggerated,[811] but there can be no doubt as to the nature of the sacrifice--the offering of an agricultural folk to the divinities who helped or retarded growth. Possibly part of the flesh of the victims, at one time identified with the god, was buried in the fields or mixed with the seed-corn, in order to promote fertility. The blood was sprinkled on the image of the god. Such practices were as obnoxious to Christian missionaries as they had been to the Roman Government, and we learn that S. Patrick preached against "the slaying of yoke oxen and milch cows and the burning of the first-born progeny" at the Fair of Taillte.[812] As has been seen, the Irish version of the Perseus and Andromeda story, in which the victim is offered not to a dragon, but to the Fomorians, may have received this form from actual ritual in which human victims were sacrificed to the Fomorians.[813] In a Japanese version of the same story the maiden is offered to the sea-gods. Another tale suggests the offering of human victims to remove blight. In this case the land suffers from blight because the adulteress Becuma, married to the king of Erin, has pretended to be a virgin. The Druids announced that the remedy was to slay the son of an undefiled couple and sprinkle the doorposts and the land with his blood. Such a youth was found, but at his mother's request a two-bellied cow, in which two birds were found, was offered in his stead.[814] In another instance in the _Dindsenchas_, hostages, including the son of a captive prince, are offered to remove plagues--an equivalent to the custom of the Gauls.[815]