VARIABI.E STAR R VULPECITL.E. 



273 



The intervals between successive maxima and minima are 

 subject to some little irregularity. And the observed 

 magnitudes at maximum and minimum vary to the extent 

 of some nine-tenths of a magnitude. Still, as compared 

 with some other stars, the movements of this variable must 

 be regarded as tolerably regular. Although by no means 

 so highly coloured as some variables, I have frequently 

 noted the star in my observation-book as ^'^ ruddy/' or 

 " decidedly ruddy." The maxima observable during the 

 present year will fall, according to my own elements, on the 

 following days : — July 9*5 and November 24* i . The observ- 

 able minima will occur on May 6-3 and September 20'8. 



The stars which I have used for comparison with B 

 Vulpeculae are shown in the small chart which accom- 

 panies this paper ; and their magnitudes are as follows, the 

 numbers in the cases of a, h, c, d, g, I, m, n being the 

 means between my own values and those assigned by Mr. 

 Baxendell : — 



a=j-i 



g=\o-o 



*=7-3± 



A=io-5 



c=8-3 



^=10-9 



d=<)-i 



^=11-4- 



«=9'S 



m=jyc) 



/=97 



W= I2'6 



20 hrs. 



21 hrs. 



5 



3 m. 50 m. 



m. 



4-22° AC' 







I^^^H^H 



^■1 



23° 0' 



jmi 



B 



15 



Hh 



1 



30' 



■BH 



1 



+ 23° 45 



^^^^1 



H 



+22° 45' 



^3^ 



15 



30 



+23° 45' 



56 m. 

 20 hrs. 



58 m. 



o m. 

 21 hrs. 



