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398 Proceedings of the Royal Irish Academy. 



No. 642. 55 CrGNi.— 6 m. Lalande (40310) ; 6 m. Harding; 5-06 

 Peirce {Harvard College Annals, vol. ix.) ; 6-5 Heis ; 5 m. Fran Tea, 

 October 3, 1877 {private letter). Sir "W. Herschel gives 56*55-59, and 

 55-63, and 63-55 , 59. 5-00 and 5-6 " est " H.P. 



May 10, 1883, I found 55 one step less than 57 (5-6 Heis), and 

 two steps brighter than 56 (6-5 Heis), or about 5-4 m. 



August 17, 1883, 55 a mean between 56 and 57, or about 5*5. 

 September 4, 1883, 55 one step less than 56, or about 5-8 



iRo. 643. 4 Aqtjaeii. — N'ot in Lalande' s Catalogue; 6-7 Heis; 6*2 

 Grould. A suspected variable by Peirce {Harvard Amials, vol. ix.). 

 Sir "W. Herschel gives 5,4. 



I found it fainter than 5 Aquarii, October, 1875. 



September 21, 1879, 4 about half a magnitude less than 5 Aquarii. 



October 15, 1882, 4 three steps less than 5. 



Ifo. 644. 5 AatTAEn. '^ot in Lalande' s Catalogue ; 5-6 Heis. Sir 

 "W. Herschel rated 5 very slightly fainter than 3 Aquaiii. 6 m. Piazzi ; 

 7 m. Bessel. At Cordoba it was estimated 5-1 in 1871, and 5-8 in 

 1872-1874 {TJranometria Argentina, p. 309). 5-52 H.P. 



In October, 1875, I found it brighter than 4. 



September 21, 1879, 5 about half a magnitude brighter than 4. 



October 15, 1882, 5 about three steps brighter than 4. 



No. 645. 32 VuLPECUL^. — 5|- m. Lalande (40456); 5 Harding; 

 5-6 Heis. Suspected by Gilliss to be variable, and afterwards by 

 Franks ("decidedly inferior to 31 Vulpeculae," September 21, 1877). 

 My observations are : — 



December 1, 1874, fainter than 52 Cygni (4-5 Heis), and slightly 

 less than 31 Vulpeculse (5 m. Heis). 



April 6, 1875, same relative brightness. 



October 4, 1875, about half a mag. less than 31. 



October 19, 1876, rather more than half a mag. less than 31. 



August 4, 1877, about half a mag. less than 31. 



No. 646. 7 Aqtjaeii. — Bated 3 m. by Ptolemy; 6 Sufi, Lalande, 

 and Harding; 7 m. Bessel; 5 m. Argelander; 6-5 Heis; and 5-9 by 

 Gould and Espin. Gould suspects variation. Sir "W. Herschel found 

 ^_7 __8 and 18, 7. 5-69 H.P. 



(See Southern Stellar Oljects, p. 113). 



October 15, 1882, 1 found 7 less than /a Aquarii, and very reddish, 

 with binocular. 



No. 647. BiEMiifGHAM 573 Delphini. — 8 m. Lament and Bessel. 

 Birmingham's observations (1872-1875) vary from 7*5 to ; 8 m. 

 AVebb, "1873, September 12, 13, and 25. A 7-2 m. star (a wide 

 double) closely n.f. is also suspected of variation {Cel. Ohj., p. 298). 



November 25, 1878, I estimated it 7|- m. 



