LIME KILN AT EMANIA, OR THE NAVAN. -1145. The Four Masters mention that a lime kiln, which measured sixty feet every way, was erected by Gillamacliag, successor of Patrick, opposite Eamhain Macha, i.e., the Navan. Under this year also we have the following notice in Colgan's Annals of Armagh relative to the building of a lime kiln of enormous size at Emania. Gelasius, Archbishop of Armagh, for the purpose of repairing the churches: "Priorum (Piorum) laborum indefessus exantlator Gelasius cogitans de Ardma-chana basilica aliisq: sacris aedibus adhaerentibus reparandis extruxit pro calco and cemento in hunc finem excoquendo, ingentio molis fornacem - cuyus latitudo ab omni parte erat sexaginta pedes protensa." -Trias Thaum, p. 305. There are several lime kilns in good working order at the Navan, and the limestone procured from these quarries is supposed to be the finest in the country. The ancient method of using this lime was to reduce it to a thin or semi-liquid mortar with a portion of fine sand, which being thus prepared, was poured into the internal joints of the walls. This process is designated grouting. Eamhain Macha, as before described, was the name of the ancient palace of the Kings of Ulster, from the period of Cim-baeth, its founder, who flourished about 300 years before Christ till AD 332, when it was destroyed by the three Collas -the ancestors of the people called Orighialla- who entered Ulster with an army composed part of auxiliaries from Connaught, and defeating the Ulster King at the battle of Achadh Leith dherg in the present barony of Farney, County Monaghan, sacked and burned the palace of Emania -the Emania of Queen Macha and of the Royal branch Knights- and seizing a large territory for themselves, circumscribed the Kingdom of Ulster within much narrower limits than before; and the territory thus seized by the three Collas, and from which they expelled the old possessors, that is, the Clanna Rora or descendants of Ir, was called Orghialla or Oriel, and comprised the present Counties of Louth, Monaghan and Armagh. In the year 1152, John Paparo, the legate of Eugene III., held a Synod at Kells to re-organise and render more produc-tive to his holiness, the Irish Church. This was a fatal breach in our Ecclesiastical constitution, which wanted no foreign interference, being regular and independent. He distributed four "palls' to four newly instituted dignities, named Arch-bishops Armagh, Dublin, Cashel, and Tuam. At this period the dignity of Primate of all Ireland was recognised as belong-ing to the Archbishops of Armagh, of whom Gelasius was the first.