334 Proceedings of the Royal Irish Academy. 



24, 1877. My observations are: — October, 1875, about 6i- m., and 

 fainter than o (27) Aurigse ; January 31, 1878, equal to a star/., and 

 brighter than the other stars in the immediate vicinity ; October 6, 

 1879, about 1 mag. less than o Aurigse ; January 9, 1882, two steps 

 less than the star/; April 2, 1883, two steps less than the star/ — at 

 least 1 mag. less than o Aurigae ; March 4, 1884, I estimated it 6"3 m., 

 two and a-half steps less than 85 Heis Aurigse. 



No. 175. S9 Atjeig^.— 7 m. Lalande(11406);6-7B:eis(38 = 6m.); 

 6 m. Armagh Catalogue; 5-90 Pierce — measured (38=6-07). Sir W. 

 Herschel gives the sequence 39'38-42. 38 is rated brighter than 39 in 

 the Durchmusterung . My observations are as follows: — March 21, 1876, 

 39 slightly brighter than 38; November 20, 1876, 39 about half a 

 magnitude brighter than 38 ; March 31, 1877, 39 and 38 nearly equal ; 

 October 28, 1877, 39 about \ magnitude brighter than 38 ; November 

 17, 1878, 39 about J magnitude the brighter; October 7, 1879, 39 

 nearly ^ magnitude the brighter; December 7, 1879, 39 three steps 

 brighter than 38; December 1, 1880, 39 two steps the brighter; 

 September 18, 1881, 39 two steps the brighter; January 9, 1882, 39 

 four steps the brighter; September 13, 1882, 39 three steps the 

 brighter; October 15, 1882, 39 three steps the brighter; March 4, 



1883, 39 three steps brighter than 38 ; October 3, 1883, 39 four steps 

 the brighter; November, 20, 1883, 39 four steps the brighter; Feb- 

 ruary 22, 1884, 39 six steps the brighter; March 4, 1884, 39 three 

 steps brighter than 38, but two steps less than 36 Aurigse ; April 1, 



1884, 39 two steps brighter than 38. 



No. 176. Lacaille 2145 Pictoeis. — 6 m. Lacaille; 6-9 Gould (No. 

 3 of Puppis). Tebbutt says it is " certainly variable." It is a double 

 star, and Tebbutt rates the components as SJ and 8|-, and distance 

 2"-5, and adds — "In the Catalogues of Lacaille and Brisbane and the 

 British Association the star is set down as of the sixth magnitude, 

 whereas at the date of my measures (188r214) neither of the com- 

 ponents could be seen in so small an instrument as that employed by 

 Lacaille" {Ohervatortj, Jiily, 1881). It seems to be No. 34 of Pictor 

 in Behrmami' s Catalogue, where it is rated 6 m. Sir J. Herschel rated 

 the components 7 and 7J, and calls it a " superb double star" {Ca^e 

 Oh., p. 187). 



No. 177. 19 Lepoeis. — 6 m. Lalande (11700) ; 6 m. Harding ; 5 and 

 6 m. Argelander-Oeltzen ; 5-9 Grould ; 4 m. in Stone's Cape Catalogtie 

 (1880) ; 6 m. Heis ; not in Argelander's JJranometria. Kated 7 m by 

 Tebbutt (N. S. Wales, Feb. 12, 1883) while observing the Great 

 Comet of 1882 {Olservatory , May, 1883) ; 6 m. Franks, December 31, 

 1877. 5-53 H.P. 



No. 178. W. B. VI. 58 Lepoeis. — Observed by Bessel as 6 m. in 

 1825. It is not in Lalande's Catalogue or Sardmg^s Atlas, and no 

 observations were recorded by d'Agelet, Lament, and other observers 



