GrORE — On Knoicn Variable Stars. 195 



142. y8 LYEiE. — Elements derived by Schonfeld from Argelander's 

 observations, 1840-1859, combined with those of Goodricke, Westpbal, 

 and Schwerd. This star has 2 maxima of 3-4 m. and 2 minima, one 

 3-9 m., and one (the chief minimum) of 4-5 m. Schonfeld finds, from 

 a comparison of Argelander's light curve with his ovrn, the following 

 correction for the Elements : — 



Cor. Ep. 291 (1865, April 20) + 0^ 53"-2 ± 17'"-49. 

 „ „ 450 (1870, Dec. 2) + 2" SS-^-e ± 21"-30. 



Smaller irregularities in the epochs and brightness also occur. 



143. R (13)Ltk^. — Variation, according to Schonfeld, small, but 

 certain. Elements derived from a few observations by Baxendell and 

 Schmidt. 



144. S Coe.o:n'A Afstealis. — Erom six years' observations Schmidt 

 found a period of 6-11713 days. "With the addition of a seventh year 

 Schonfield derives the Elements : — 



Ep. E. Min. 1870. 3. 26-17; Max. 1870. 3. 29-41 + 6^-1130 E; 



and from another calculation of the epoch : — 



Ep. E. Min. 1870. 3. 29-79 ; Max. 1870. 4. 2-04 + 6'i-2l70 E. 



He thiaks that even a period of 6-0 days or 6-33 days not quite ex- 

 cluded. The great southern declination of the star renders it, even 

 at Athens, difficult to be observed. 



145. E Coeo:n'a Atjsteaiis. — In connexion with a small nebula, also 

 variable according to Schmidt. Erom the available data Schonfeld 

 cannot find satisfactory Elements. "With reference to this star, Schmidt 

 says (A jST 1613) : — " Nebel n und der westlich in ihm stehende 

 Stem X fahren fort veranderlich zu sein, wie es seheint unabhangig 

 von einander. "U'enigstens fur x Kann die Periode nicht kleiner als 

 25 Tage sein." 



146. R Aqitil^. — Elements derived by Schonfield from 8 maxima 

 and 17 complete periods. These show marked faults up to 92- days. 

 The Kght cun^e is very variable, especially at the maximum and 

 during the first 2 months of the decrease. The increase from 9-10 m. 

 to 7-8 m. is often extraordinarily quick. Schonfeld calls its colour 

 " ausgezeichnet roth." A 9-6 m. star sp., and a 10-6 m. 7ip. 



147. T Sagtttaeii. — The Elements derived by Schonfeld represent 

 well the earlier observations up to 1849. Increase from 9-10 m. and 

 9 m. very slow ; afterwards quicker. 



148. E, Sagiitaeu. — Elements derived by Schonfeld from 3 certain 

 maxima since 1866, and represent well all the observations. An 

 irS m. star s})., and a 10 8 m. star np , the variable. 



