194 Proceedings of the Royal Irish Academy. 



133. X (3) Sagitta-rtt. — The Elements show well-marked inequa- 

 lities, but the mean period given is, according to Schonfeld, certain to 

 within O-^-OOOo. 



134. "W (y') Sagittaeh. — The observations show marked irregu- 

 larities in the period, the deviations sometimes amounting to xb-th of 

 the period; the proportional length of the increase and decrease of 

 light also varying. 



135. T Heectjlis. — Elements derived by Schonfeld from observa- 

 tions of 35 periods, and show deviations up to 10 days, which have 

 partly a regular course. A 10 m. star 7ip. 



136. T Seepentis. — This star lies sf. the coarse cluster, H. VIII, 

 72. The Elements show deviations to 15 days ; but Schonfeld thinks 

 that the period may have become longer since 1866. Increase of light 

 from 10 m. about 51 days, and the decrease 54 days, both with marked 

 fluctuations. An 11-12 m. star w/. 



137. Y SAGiTTAEn. — Variation since 1870, according to Schonf eld's 

 observations, only trifling, and not periodical. 



138. TJ Sagittaeh. — Elements derived by Schonfeld from 142 

 maxima and 152 minima observed by Schmidt, which nearly agree 

 with his own since 1870. There appear to be inequalities up to -^th 

 of a period. A star 8-6 m. nf. 



139. T Aqtil^. — From numerous observations since 1868, Schon- 

 feld can flnd no regular period. 



140. H ScuTi. — Schmidt and Schonfeld flnd that bright and faint 

 minima usually alternate. Erom 18 certain determinations of minima, 

 Schonfeld finds the correction of minimum epoch for E = 94 (1869, 

 July) in the mean + 4 days. 



141. K Pavonis. a southern variable discovered at Cordoba, from 

 observations by Thome in 1872 and 1873. The mean period of 9-1 

 days is the same for the minima as the maxima. According to Grould, 

 the period is subject to considerable fluctuations ; and the position of 

 the minimum also varies, although always later than midway be- 

 tween the maxima. He gives the following dates of maxima and 

 minima : — 



Maxima— 1871, December 31 ; 1872, October 6; 1873, July 26. 

 jMinima— 1871, November 29 ; 1872, December 25 ; 1873, July 3. 



