and positions of 4f5S double and triple stars ^ ^c. 123 



No. DXLVI. continued. 



Passy ; February 17, 1825 ; Seven-feet Equatorial. 



9th and 12th magnitudes. 



Position = 20° 40' nf; single observation. 



The night is become so hazy that no more measures can be obtained. 



Mean Result. 



of A B. Position ^of" ^^' np\ -Distance 1' 19". 600 ; 



Epoch 1825.12. 



of AC Position 20° 47' nf{ 3 Obs.); Epoch 1825.12 ; 



Distance 2' 2 2^.63 7 (2 Obs.); Epoch 1825.11. 



No. DXLVII. R. A. 7^ 15" ; Decl. 20° 48' N. 

 Struve, 260 ; III. 48 ; 

 Double; 8th and p^jnagnitudes. 



Blackman-street ; March 12, 1824 ; Five-feet Equatorial. 



Position = 50° 51' »/j 5 Obs. Diff. = 2° ii' | 



Distance = 6".^ 11 15 Obs. 



Diff. = o".505 3 



Blackman-street; March 31, 1824: Five-feet Equatorial. 

 Sth and 10th magnitudes. 



Position = sf 37' nf\ 5 Obs. Diff. = 3° 43' I Measures very difficult. 

 Distance = 6 '.521 ) 5 Obs. Diff. = 0.5695 ^ 



Mean Result, 

 Position 50*^44'^/; Distance 6".5 16; Epoch 1824.21. 

 There is a notable alteration perceivable in the position of 

 this star. A measure on the ist of January, 1783, marked 

 " very exact," makes the angle 43° 54' nf, and the distance at 

 the same time was found to be 6".25. The change of position 

 amounts to — 6° 50', being — o°.i 66 per annum, retrograde. 

 Future observations must decide on the reality of this motion, 

 and whether this is entitled to more than a proTisional place 

 among the Binary stars. (H.) 



