474 



received preparatory to the cast being made from it. The 

 inscription reads as follows : — 



or don R15 Do chimOelbuch u choNchobaiR. or 

 Don chaeR oo gillu cr u chuachail. 



" A PRAYER FOR THE KING, FOR TURLOGH CONOR. A PRAYER 

 FOR THE ARTIFICER, FOR GILLU CHRIST THUATHAIL." 



In conclusion, Dr. Petrie observed that the importance of 

 this latter inscription, as preserving the name of the Irish ar- 

 tificer, will be at once apparent, — and that it was fortunate 

 that so many remains of art in Ireland, of the eleventh and 

 twelfth centuries, preserved similar evidences of their Irish 

 manufacture ; as without such evidences, all those who main- 

 tained that the Irish were ignorant of such art anterior to the 

 arrival of the English (amongst whom the distinguished names 

 of Sir James Ware and Sir William Petty are to be numbered) 

 would, most probably, assert that they were of foreign origin 

 and manufacture, — and it would not be easy to prove the fal- 

 lacy of such an assertion. But its fallacy is proved by the in- 

 scriptions preserved on the shrine of the Bell of St. Patrick, 

 now in the possession of Dr. Todd, and exhibited to the Aca- 

 demy this evening, — and by those on the cross of Muireadhach 

 O'Dubhthaig, or Murry O'Dufly, the predecessor of Edan 

 O'Hoisin in the Archbishopric of Tuam, which is now in the 

 Museum of the Academy. Examples of the jewellery art, of 

 equal beauty and of equal antiquity with these, were not, as 

 far as Dr. Petrie knew, to be found in England ; nor was there 

 an example of the ornamented stone cross which could rival 

 that of Tuam in the grandeur of its proportions, and the beauty 

 of its ornamental sculptures. 



Professor Sir William Kowan Hamilton exhibited the fol- 

 lowing Theorem, to which he had been conducted by that 

 theory of geometrical syngraphy of which he had lately sub- 

 mitted to the Academy a verbal and hitherto unreported 



