316 Proceedings of the Royal Irish Academy. 



JSTo. 41. 54 Ceti.— 6 m. Lalande ; 1^ Bessel ; 5-5 in DM; 6-0 

 Gould (Albany) ; 6 Heis; 6-2 at Cordoba. Dr. Gould suspects varia- 

 tion, although, he iucludes the star among his " Standards of Magni- 

 tude " {JJranometria Argentina, p. 21). 5-83 and 5*6 H.P. 



No. 42. I, Ceti. — Eated 3-4 by Sufi ; 3 m. by Lalande, Argelander, 

 and Heis ; 5 m. Bessel; 3"5 Gould. In November, 1876, I estimated 

 ^ and Q Ceti equal. Sir J. Herschel's estimates make t, Ceti 0-8 m. 

 faiuter than -r) Ceti, whereas at Cordoba they vrere rated equal. 3'85 H.l'. 



No. 43. e Cassiopeia. — 4 m. Ptolemy and Sufi ; 4 m. Lalande ; 

 3 Harding; 3-4 Argelander and Heis; 3-49 Sii'. J. Herschel ; 

 31 m. Franks; 3-51 Pritchard (1882-810), November 25, 1877. In 

 October, 1876, 1 found it rather more than half a magnitude less than S 

 Cassiopeiae. It has also been suspected of variation by Gemmill ; his 

 observations from February, 1882, to October, 1883, vary from 3'2 to 

 3-8 {Eng. Mechanic, February 8, 1884). 3-55 H.P. 



No. 44. 55 Andkomeda. — 6 m. Lalande ; 5 Hardiag ; 6 Heis ; 

 5^ Franks, November 25, 1877; measured 5-48 by Pierce; Sir W. 

 Herschel r, A*55. Described by Sir W. Herschel as " a fine specimen 

 of a nebulous star." Smyth says {Bedford Catalogue, p. 43), 

 "Pigott suspected A of variability." I estimated it 6 m., October, 

 1875. 5-60 H.P. 



No. 45. I Pisciioii. — 4 m. Ptolemy, Sufi, Argelander, and Heis ; 

 5^ Lalande and Piazzi; 5 Harding ; 4'5 in DM; 4-5 Howzeau ; 

 4-5 Gould (at Albany), and 4-7 at Cordoba ; 4-70 Pritchard (1882-623). 



No. 46. V. PisciUM. — One of Argelander's variables, but rejected 

 by Schdnfeld. It is Lalande 3504 (7jm.). The Cordoba estimates 

 are 6-8 and 7-0 {TI. A., p. 335), and in Gould's Catalogue it is marked 



"var.(?)" 



No. 47. 56 Andeomeda = BAC (579 + 580). — 6 m. Lalande 

 (3517 and 3524) ; 5-6 Heis. Struve found the p star of this wide 

 pair the smaller; Webb found it the larger 1850, and nearly equal 

 1871 ; Whitley and Franks i? smaller {Cel Ohj., p. 215). 5-74 H.P. 



No. 48. 7 Aeietis. — 7 and 5 m. Lalande (3540-41) ; 6 m. Hard- 

 ing and Heis; 6 Piazzi, who says, " Quator dierum intervallo ab S'' 

 ad 6'^ magnitudiaem stellam banc transiise mihi visum. Non inde 

 tamen inter variabiles eam referre anderem.' ' 



Sir W. Herschel gives 14-7 (which means that he found 7 about 

 0-4 m. less than 14). My observations are: — "November, 1875,7 

 slightly brighter than 1 Arietis, and about 6 m. ; Februaiy, 1877, 

 7 a little less than 1 Arietis ; December 29, 1877, 7 slightly less than 1 ; 

 December 23, 1878, 7 slightly less than 1 ; October 5, 1879, 7 very 

 slightly brighter than 1; November 2, 1882, 7 and 1 exactly equal; 

 September 27, 1883, 7, two steps brighter than 1 ; January 2, 1884, 

 7, two steps less than 1. 



