and positions of 4^8 double and triple stars, &c, 213 



No. DCXCI. R. A. 17^ 32" ; Decl. 24** 30' N. 

 Struve, 551 ; III. 104. 



Triple ; A 6th, B 10th, and C of the 9th magnitudes : the 

 star B is decidedly blue, and bears a very considerable 

 illumination. 



Blackman-street ; July 8, 1824 ; Seven-feet Equatorial. 

 Measures of A B. 



Position = 81° 7' »/ 1 s Obs. DifF. = o° 3 1' ^ On the meridian 

 Distance = if '.374. | 5 Obs. DifF. = o".3843 "" ^^® menoian. 



Passy ; June 23, 1825 ; Seven-feet Equatoiial. 



7th and 10th magnitudes. 



Position = 80° 57' nf 5 Obs. I DifF. = 1° 18' > y unsteady 

 Distance = i7".os4 5 Obs. j DifF. = 0^649 j ^^^^ unsteaay. 



Measures of A C. 

 Blackman-street ; July 8, 1824 ; Seven- feet Equatorial. 



Position =71° 54' sf\ 5 Obs. DifF. = 0° 43' ) 



Distance = 2'38".o8i I 5 Obs. DifF. = 2".o9i j * * ' * 



Passy ; June 23, 1825 ; Seven-feet Equatorial. 



7th and 9th magnitudes. 



Position = 71° 47' sf j 5 Obs. 

 Distance = 2' 38''.454 j 5 Obs. 



SI = i''.986} Very unsteady. 



Mean Result. 



of A B. Position 81° 2' nf; Distance I7".2i4 ; 

 Epoch 1825.00. 



of AC. Position 71° 50' sf; Distance 2' 28^.267 ; 

 Epoch 1825.00. 



A very trifling change (-(- 2° 46') in position, and a rather 

 more notable alteration (+2". 881) in distance, appear on 

 comparing these observations w^ith those of 1783. (H.) 



