96 



Discovery of two new variable Stars. 



brilliancy on the 20th. Full moonlight prevented any fur- 

 ther records of the vanishing star, but taking advantage of 

 a very fine interval during the totality of the lunar eclipse 

 of June 1st, its invisibility was satisfactorily established ; 

 and though sought for on every suitable opportunity 

 throughout the following five months, it has not since re- 

 appeared. 



The light comparisons actually made were as follows : 



1863 May 20th 9*1 magnitude. 



21st... 96 



„ 22nd 101 



24th 105 



„ 25th 110 



„ 26th 11-4 



„ 27th 11-9 



„ 28th 122 



Of the other new variable, situated in the constellation 

 Sagittarius, little more ^pan be said than that it was first 

 seen on July 19th 1863, as a somewhat ruddy star of the 8 J 

 magnitude ; and that from then until the present time it has 

 slowly and steadily diminished to the 12th magnitude, or 

 one twenty-fifth of its greatest recorded intensity of light. 

 Dates of its actual invisibility in previous years cannot be 

 furnished as in the case of U Scorpii, but if visible at all 

 it was most certainly less than 11 \ magnitude on August 

 30th 1859 ; on July 22nd, and on August 7th 1860. 



The approximate positions of the two new stars, reduced 

 to I860, are : 



U Scorpii... 

 T Sftgittarii. 



Light flange. [Right Ascension, 



h. m. j- 

 9-5 to below 13'5 magnitude 16 14 25 5 

 8-5 to 12'0 „ 19 8 9 4 



South Declination 



o / // 



17 33 21 

 17 12 11 



N. R. Pogson, 



Madras Observatory, ) 

 December 1863, f 



