356 Proceedings of the Royal Irish Academy. 



1^0. 332. Lacailie 4540 Antli^. — 6 m. Lacaille ; 6-5 Behrmann. 

 Gould says, '' This star appears to vaiy between the approximate limits 

 S-T-" and 6-3»." 



ITo. 333. a Ues^ Majoris. — 2 m. Ptolemy, Sufi, Lalande, and 

 Harding; 1-96 Sir J. Herschel (C^e Ohs., p. 440); 1-88 Pritchard, 

 Oxford,'' and 1-92, Cairo, 1883. 1-96 and 2-1 H.P. 



Stated by Klein to be variable in colour, and the observations of 

 "Weber seem to confirm the suspicion. The latter observer found a 

 period of about 33 days, and the changes of colour from " white" to 

 " fiery red." Other observers, however, do not agree. 



^0. 334. Steuve 1504 Leoms = P.X. 229.— A double star, 8, 8 : 

 284°-0 : 1"-13. "With reference to this star, Chambers says in his 

 edition of Smyth's Bedford Catalogue (p. 288), ''According to 0. 

 Struve, one or both of the components are variable. 



ISo. 335. 10 Htde^ = Lacaille 4615 (6 m.). — Suspected variable 

 by Grilliss, who says, " Probably variable at very short intervals ; of the 

 seven observations three estimations make it 6th magnitude, three 

 5th, and the other 5-6." It was rated 5 m. by Argelander, March 15, 

 1880 ; 7 m. April 22, 1851 ; and 6 m. April 28, 1851. It is 5 m. in 

 Harding'' s Atlas, and was rated 5 m. by Heis ; 5-6 Behrmann, and 

 5-8 at Cordoba. The following observations were made by me in 

 India : — May 15, 1876, about 5 m. and slightly less than -^^ Hydras ; 

 May 23, 1876, 10 Hydrae about I- a mag. less than -^ ; January 22, 

 1877. Brighter than x^ ; not quite equal to x^. It is 5*35 in H.P. 



IS'o. 336. Lacaille 4623 Htde^. — 4m. and 5m. Lacaille ; 5 Heis; 

 5-6 Behrmann. The Cordoba estimates vary from 5*6 to 6"1 ; 6 m. 



Cape Catalogue (1878-78). 



IS'o. 337. ^- II. 49 Leonis. — A nebula suspected by d' Arrest to 

 be variable. In 1831 it was brighter than Herschel's III. 27, / it. 

 In 1861 =1. class ; in 1863 sometimes = II. class, at others invisible ; 

 1864 fainter than Herschel's III. 27 {Cel. Ohj., p. 333). 



'Bo. 338. ^ LEOifis. — 4 m. Sufi, Lalande, and Harding ; 5-4 Arge- 

 lander and Heis ; 4-8 Gould (at Albany) and 4-1 to 4-3 at Cordoba. 

 Dr. Gould says it "appears to have grown brighter since Argelander 

 and Heis gave its magnitude as 4f " {U. A., p. 336). 4*31 Pritchard 

 (1882-36). March 7, 1884, 1 estimated it 4-8, less than v (4-4 Gould) ; 

 March 23, 1884, 4-5 m. 4-53 H.P. 



No. 339. Lacaille 4679 (1882-36). Hyde^. — 7 m. Lacoille. Nu- 

 merous estimates at Cordoba vary from 7-0 to 7-7. 



No. 340. :S 1527 Leonis = Lalande 21571 (7m.).— 7-4 in DM; 

 7Bessel; 6-7 Gould. A double star 6-9,8-1 : 10°-1 : 3"-9. Webb 

 says, "Fl. bin. (?) 6-9 var. col. and mag. (?)" {Cel. Olj. 4th edition, 

 p. 330). 



