Gore — On Knoivn Variahle Stars. 175 



the magnitudes 5-7, 6'5, and 6"7. It -n^as rated 7^ m. by Hencke ; 

 7^ and 6i- by Ai'gelander ; and it is 6-7 in the Burchmusterung . The 

 star is red. 



37. a OEiojas. — Argelander foimd a period of 196 days ; but later 

 observations render this result doubtful, 



38. 7} GrEXTN-oEtrar. — From his own observations Schonfeld found 

 for the brighter phase, small and not very regular fluctuations ; but 

 for the minimum a regular decrease and increase, the first about 6 

 weeks, the latter probably of somewhat longer duration. Schonfeld 

 calls its colour " intensiv gelb." Schmidt, fi'om his observations of 

 two Maxima 1875, February 25, and September 23, finds a period of 

 210 days. From its proximity to /i, Geminorum I have found its 

 fluctuations of light occasionally very apparent. 



39. T lIoxocEKOTis. — Schonfeld finds tolerably regular variations 

 from a maximum of 6-2 to a minimum of 7"6, but thinks that obser- 

 vations are probably influenced by the coincidence of its period with 

 that of the lunar month. He calls its colour " goldgelb." Davis 

 observed Maxima of this star at Cordoba 1872, April 24, and iS'ovember 

 25 or 26; and Minima, 1872, April 14, and December 12. Bigelow 

 observed Maxima in 1874, January 4 or 5, and February 1 and 28 

 ( Uranometria Argentina^ p. 331). Gould's period is 27'0054 days. 



40. E, MoifocEEOTis. — Near the comet like Xebula I^ 399. Schon- 

 feld thinks that no regular period exists, and the minimum magnitude 

 is uncertain. 



41. S (15) Mo^-ocEEOTis. — It is the chief star of the cluster 

 H VIII. 5, and has two close companions of the 9th and 11th mag- 

 nitudes. The period given in the Catalogue was found by "Winnecke, 

 and confirmed by Schonfeld ; but other observers do not agree. 

 Schonfeld calls its colour " gelbKch" ; Struve, "griin"; Dawes, 

 "yeUow." 



42. E Lt^^cis. — Identical with DM + 55°, 1154. With reference 

 to its colour, Schonfeld says " Farbe anscheinend rothlich." 



43. ^ GEJUxoErii. — In 1844 Argelander found a period of lO** 3'' 

 32™- 3 + 6"-4, but afterwards it increased. Schonfeld deduces the 

 period given in the catalogue from Argelander' s epoch, combined with 

 observations by Schmidt and himseK. He finds occasional inequalities 

 up to iV of the period, but a greater portion of these are explicable 

 by faults of observation. Argelander' s light curve gives, from 6 years' 

 observations, the decrease of light somewhat quicker than the in- 

 crease. 



Pickering considers it probable that the star is a surface of revo- 

 lution, one side being about four-fifths of the brightness of the other. 



