384 Proceedings of the Royal Irish Academy. 



No. 547. Lacaille 7686 Sagittarii( = 6222 B.A.C.) — 7in. Lacaille; 

 7 m. Harding ; 7^ m. Argelander, but rated 6-5 by Yarnall and 6-7 by 

 Heis. It was found " little, if any, above 8 m." at Cordoba. 



No. 548. -q Seepentis. — 4-3 Sufi.; 3 m. Argelander and Heis; 3-5 

 Gould; 3^ Franks. Smyth says, "this star is suspected of being 

 variable."' 3-65 Pritchard (1882-472). On August 22, 1876, I found 

 rj slightly hrighter than B Serpentis, but less than A, Aquilae ; October 

 21, 1876, 7] Serpentis distinctly less than (i Ophiucii (both 3 m. Heis), 

 and about = v Ophiucii (4-3 Heis). Sir J. Herschel's estimates make 

 7) Serpentis 0'49 m. brighter than e Ophiucii, whereas 77 Serpentis was 

 estimated 0-2 m. the fainter at Cordoba. 



No. 549. (j> Dkaconis. — 4-3 Sufi ; 5 and 4A- Lalande ; 4-5 Arge- 

 lander and Heis ; 4-7 in D.M. ; 4-22 Pritchard '(1882-731). Suspected 

 variable by Gemmill {English Mechanic, November 16, 1883). In 

 October, 1875, and December 1876, I found it less than ;)( Draconis ;, 

 1884, March 4 and 18, <^ three steps less than ^ ; April 2, <^ four steps 

 less than x- 4-21 and 4-4 H.P. 



No. 550. K CoEONiE AusTEAXis. — 6m. Lacaille (7758) ; 5-6 Heis;, 

 5'4 Goukl ; 6-7 Cape Catalogue (1877*65). A fine double star 6, 7 ; 

 359°-3: 21"-78 (1836). I found the components white and reddish 

 yellow, 3 inch achr. 1875 (in India), with a faint and distant comes n. f. 



No. 551. 42 Deaconis. — 5 m. and 9 m. Lalande. (9 perhaps a mis- 

 print for 6?). Sir W.Herschel gives 27(7). 4236; 6 m. Groombridge; 

 5-6 Heis ; 5 m. Franks, and = 36 Draconis, August 15, 1877. 4-98 H.P. 



April 19, 1878, I found 42 about J mag., less than tt Draconis, but 

 slightly brighter than 36 ; November 3, 1878, 42 = 36; October 5, 

 1879, 42 slightly less than 36; March 4, 1884, 42 one step brighter 

 than 36 ; April 2, 1884, 42 one step less than 36. 



No. 552. Birmingham 447 Aquil^ ( = Lalande 34307 (7 m.) — 

 Birmingham considers this star to be probably variable in colour. It 

 was noted by Schjellerup as "roth," but Birmingham found it 

 " blue " (!), May 18, and July 20, 1873. 



No. 553. BiEMiNGHAM 448 Lyil^. — Birmingham says in his 

 Catalogue of Heel Stars : "From several observations, I conclude this 

 star to be a variable of short period between 8 and 9 mag." It is 8'5 

 in the Durchmusterung , but has not been found in any other Catalogue. 



No. 554. a ScTJTi = Lalajstde 34374-5. — 4|-, 4 Lalande ; 5 Harding ; 

 4-5 Heis; 5*2 Johnson (1857). The Cordoba estimates are 3"7, 3-6, 

 and 3-5 in 1872 ( U. A. p. 322). I found this star equal to 12 Aquilae 

 in August, 1875, and Octoher, 1876. 



No. 555. % 358 Heecitlis.— A double star, 6-8, 7-2 : 202°-l : 

 1""8 ; components suspected variahle. A probabh^ binary. 



