848 Proceedings of the Royal Irish Academy. 



No. 266. - MoNOCEKOTis, — Observed as 9 m, by Dreyer, March 8, 

 1879. It h Tiot in. iYie Durchmusterung, nor in Bond''s Zones 46 and 

 47, but appears as an 11 m. in Zone 48, As the Sarvarcl Zones contain 

 stars to 11 m. of Argelander's scale, Dreyer considers this star may be 

 variable. It also occurs as a 10 m. in the Munich Catalogue of Stars, 

 between + 3° and- 3° declination. Dreyer gives its position as 16''7 p 

 and 103" north oi Schjellerup's red star 109 (=203 of Birmingham's 

 Catalogue = LL 16770) {Mon. Not. E.A.S., April, 1879). 



1^0. 267. Lacaille 3499 Volantis, — ( Uranometria Argentina, 

 p. 140). 



IS'o. 268. Oeltzen 515 Camelopaedi. — Position given in the Cata- 

 logue is only approximate. The place for 1855 is R A 8™ 21™ 43^, de- 

 clination + 83° 13' -2. 



No. 269. I, Ptxidis = / Mali = Lacaille 3450., 5 m. Lacaille ; 

 6-5 Heis and Behrmann. The Cordoba estimates show signs of varia- 

 tion from 5i to 5f, or lower {Uranometria Argentina, p. 297). It is a 

 red star. 



No. 270. I Canchi. — 4m. Sufi; 5 m. Lalande and Harding; 4m. 

 Heis; 4 m. Franks, '' pale orange ;" 4-24 Pritchard (1883-019). It is 

 a double star, b-^, 8, 1836 (Dembowski, 4, 6-5, vars. 1858), 307°-8 : 30" 

 {Cel. Ohj., p. 253). In January, 1876, I found t brighter than y, and 

 about equal to S Cancri. 4-16 and 4*3 H.P. 



No. 271. 52 Caitcri.— 6 m. Lalande (17421) ; 7 m. Harding; 7 m. 

 Armagh Catalogue ; %■ 5 m.. Washington Catalogue. Not in -ffm. Sir W. 

 Herschel found 52 brighter than 68 and 71 Cancri, and nearly = 80 

 and 54 - 52. 



My observations are : — February 28, 1878, 8 m., less than Lalande 

 17384; December 23, 1878, 8 m.; February 8, 1880, 8 m.; Novem- 

 ber 22, 1883, 8 m. 



My observations, compared with those of Sir W. Herschel, seem to 

 prove variation in the light of this star. 



No. 272. 15 Htdk^.— 6m. Lalande (17490); 6m. Heis; 6m. 

 Franks, January 30, 1878. Gould says, " The brightness of this star 

 appears to have varied between the magnitudes 5 '7 and 6'3 more than 

 once during the period of our observations." March 4, 1884, I esti- 

 mated it 6-0 ; April I, 5-9. 



No. 273. R Pyxidis. — Yariable according to Grould. The Cordoba 

 estimates fluctuate between Q\ and 7'4. The star is not in Lalande^s 

 Catalogue. 



