477 



themselves supposed to be roots of that equation. When 

 these conditions are not satisfied, the theorem (C) takes 

 other forms, which, with other analogous results, may be 

 deduced from the same principles." 



Mr. Petrie exhibited an ancient Irish consecrated bell, 

 recently obtained by the Dean of St. Patrick's, and which 

 had been for many generations in the possession of a family 

 named Hanan, or O'Hanan, in the county of Armagh. This 

 bell is of the usual quadrangular form, in use amongst the 

 Irish from the introduction of Christianity into the country 

 till the close of the eleventh century, but has an approxi- 

 mation to the round form which became general after the 

 latter period. The age of this bell can be determined with 

 perfect accuracy, from the following inscription in the ancient 

 Irish character which is carved upon it. 



-f- OR ap Cumapcach mc Qililla, 

 or " Pray for Cumuscach the son of Ailill." 



The death of this Cumuscach, who was Economist of the 

 Cathedral of Armagh, is recorded in the Annals of the Four 

 Masters at the year 904. His mother, who was named 

 Gormlaith, was a daughter of Murdach King of Ulster. 



The Academy then adjourned to Monday the 9th of 

 November. 



DONATIONS. 



Archaeologia. Vol. XXVIII. Presented by the Society of 

 Antiquaries of London. 



Transactions of the Zoological Society of London. Vol. 

 II., Parts 1, 3, 4, and Proceedings, Nos. 4, 5, 6, 7. Pre- 

 sented by the Society. 



Cambridge Astronomical Observations for the Year 1838. 

 By the Rev. James Challis, M.A. Presented by the Author. 



