Geocentric model fire being lighter than air. Beyond the layer of fire, were the solid spheres of aether in which the celestial bodies were embedded. They, themselves, were also entirely composed of aether. Adherence to the geocentric model stemmed largely from several important observations. First of all, if the Earth did move, then one ought to be able to observe the shifting of the fixed stars due to stellar parallax. In short, if the Earth was moving, the shapes of the constellations should change considerably over the course of a year. If they did not appear to move, the stars are either
Truce term of Schoolchildren". They found truce terms varied according to geographical location, with the exception of "pax". In some places, more than one term was current and often four or five were known, although usually only one term predominated. Schools bordering two linguistic regions honoured both. The words used in urban areas were often at odds with words used in the surrounding countryside. The Opies recorded around 45 truce terms plus variations. The most widely used were "barley", "fainites", "kings", "crosses", "keys", "skinch", "cree" and "scribs". "Barley" was recorded by the Opies as the prevailing term in east Scotland and the