176 Proceedings of the Royal Irish Academy. 



44. R GEirrN'OErir. — According to Schonfeld, tie light curve is 

 very variable, especially at maximum, when the star often remains 

 for a week without any perceptible change. 



45. Pt Ca^^is ILixoEis. — Another determination by Schonfeld gives 

 a period of 329 days. 



46. L- Puppis = Lacaille, 2691. — Discovered to be variable at Cor- 

 doba. Dr. Gould finds variation from 3"6 m. to 6-3 m., and infers a 

 period of about 135 days, with a variation rapid at maximum, and 

 comparatively slow near the minimum, which seems to occur about 

 6 days nearer to the preceding than the following maximum. Red 

 in all stages, and remarkably so near the minimum. He gives the 

 following dates of Maxima — 1874, Pebruaiy 8, and June 25. 



Dr. Gould suspects variation also in the neighbouring star 

 L' Puppis. 



47. TJ MoxocEEOTis. — Discovered to be variable at Cordoba. The 

 period was found to be about 46 days, with the minimum somewhat 

 nearer to the preceding than the following maximum. Maxima were 

 observed by Thome 1873, April 20 and June 5 ; and a Minimum on 

 May 14. Maxima were obseiwed by the Eev. T. E. Espin in 1883, 

 on the following dates : January 28 and March 7, with secondary 

 Maxima on Eebruary 14 and March 17 ; and Minima on Eebruary 10 

 and March 13, with secondary minima on Eebruary 20 and April 6. 

 He deduces a period of about 31 days. 



48. S Caxis MrN"Ofiis. — Schonfeld gives the fonnula : 



E p. E = 1863-5-20-1 ^ 333^-9 E - 0'^-4 E^ 



and thinks that the period is diminishing. At maximum the light 

 change is very slow for a week. A minimum of the star has not been 

 observed. Schonfeld calls its colour " intensiv gelbroth." 



49. T Canis Minoeis. — Erom obseiwations before 1865, Schonfeld 

 finds a period of £22-1 days, but earlier observations require the 

 longer period given in the Catalogue. Colour not marked. A 12*7 m. 

 star s.p. and a 12-2 m. s.f. the variable. 



50. S GEMiiv'OErii. — '^eW observed since 1852. The variation is 

 quick, according to Schonfeld, especially in the increase of light. 



51. P Puppis. — Discovered to be variable at Cordoba. Dr. Gould 

 assigns no period. It was rated 7 m. by Lacaille, and 5^ m. by 

 Tarnell (1869, Eebruary, 27). 



