PROCEEDINGS 



THE ROYAL IRISH ACADEMY. 



1846-7. No. 62. 



February 22nd, 1847. 



REV. HUMPHREY LLOYD, D. D., President, in the 

 Chair. 



The President read the following letter from Mr. Cooper : 



"Merville, February 19 th, 1847. 



" My dear Lloyd, — On Saturday last I received a letter 

 from my First Assistant at Markree Observatory, Mr. A. 

 Graham, dated 11 th inst., in which he states, that having on 

 the previous day heard from Mr. Hind of his discovery of a 

 new comet on. the 6th, he had the night before observed it 

 thus : 



Feb. 10.49768, G. M. T. a = 21h. 42m. 39.4s. S = 69" 1' 44". 



" Mr. Hind's place on 



Feb. 7th. 6h, 54in. 5s. a = 21h. 16m. 58.8s. S = 70" 56' 42". 



" Again, on the 15th, I heard from Mr. Graham, under 

 date the 12th, stating that he had attempted an orbit from 

 the observations of Mr. Hind of the 6th and 7th, and his own 

 of the 10th, which, he conceived, could not be worth much, 

 as the heliocentric arc was only 0° 38' 20" between the ex- 

 treme observations. The result he obtained was : 



VOL. III. 2 L 



