cholic makes them serious of settled disposition, even sad. To relieve brain pressure and/or maybe to exorcise evil spirits, holes were made in skulls by a drill with a metal tip that was caused to turn back and forth by a strap wrapped around a wooden handle. A king's daughter Edith inspired a cult of holy wells, whose waters were thought to alleviate eye conditions. Warmth and rest were also used for illness. Agrimony boiled in milk was thought to relieve impotence in men. It was known that the liver casted out impurities in the blood. The stages of fetal growth were known. The soul was not thought to enter a fetus until after the third month, so presumably abortions within three months were allowable. The days of the week were Sun day, Moon day, Tiw's day (Viking god of war), Woden's day (Viking god of victory, master magician, calmer of storms, and raiser of the dead), Thor's day (Viking god of thunder), Frig's day (Viking goddess of fertility and growing things), and Saturn's day (Roman god). Special days of the year were celebrated: Christmas, the birthday of Jesus Christ; the twelve days of Yuletide (a Viking tradition) when candles were lit and houses decorated with evergreen and there were festivities around the burning of the biggest log available; Plough Monday for resumption of work after Yuletide; February 14th with a feast celebrating Saint Valentinus, a Roman bishop martyr who had married young lovers in secret when marriage was forbidden to encourage men to fight in war; New Year's Day on March 25th when seed was sown and people banged on drums and blew horns to banish spirits who destroy crops with disease; Easter, the day of the resurrection of Jesus Christ; Whitsunday, celebrating the descent of the Holy Spirit on the apostles of Jesus and named for the white worn by baptismal candidates; May Day when flowers and greenery was gathered from the woods to decorate houses and churches, Morris dancers leapt through their villages with bells, hobby horses, and waving scarves, and people danced around a May pole holding colorful ribbons tied at the top so they became entwined around the pole; Lammas on August 1st, when the first bread baked from the wheat harvest was consecrated; Harvest Home when the last harvest load was brought home while an effigy of a goddess was carried with reapers singing and piping behind, and October 31st, the eve of the Christian designated All Hallow Day, which then became known as All Hallow Even, or Halloween. People dressed as demons, hobgoblins, and witches to keep spirits away from possessing them. Trick or treating began with Christian beggars asking for "soul cake" biscuits in return for praying for dead relatives. Ticktacktoe and backgammon were played.