7 The birth of the five deities on the five supplementary days is mentioned by Diodorus Siculus (i. 13. 4) as well as by Plutarch (_Isis et Osiris_, 12). The memory of the five supplementary days seems to survive in the modern Coptic calendar of Egypt. The days from the first to the sixth of Amshir (February) are called “the days outside the year” and they are deemed unlucky. “Any child begotten during these days will infallibly be misshapen or abnormally tall or short. This also applies to animals so that cattle and mares are not covered during these days; moreover, some say (though others deny) that neither sowing nor planting should be undertaken.” However, these unlucky days are not the true intercalary days of the Coptic calendar, which occur in the second week of September at the end of the Coptic year. See C. G. Seligmann, “Ancient Egyptian Beliefs in Modern Egypt,” _Essays and Studies presented to William Ridgeway_ (Cambridge, 1913), p. 456. As to the unluckiness of intercalary days in general, see _The Scapegoat_, pp. 339 _sqq._ M6 Osiris introduces the cultivation of corn and of the vine. His violent death. Isis searches for his body. 8 Plutarch, _Isis et Osiris_, 13; Diodorus Siculus, i. 14, 17, 20; Tibullus, i. 7. 29 _sqq._ 9 Plutarch, _Isis et Osiris_, 13 _sq._ M7 She takes refuge in the papyrus swamps. Isis and her infant son Horus.