and positions of ^^s^ double and triple stars y &c, 45 



No. CCCCXXXIX. R. A. 3^ 38" ; Decl. lo** 35' N. 



30 Tauri ; Struve, 107 ; III. 66. 



Double ; 5th and 12th magnitudes ; small star, blue, and 

 very faint, but is rendered more distinct by a slight 

 illumination. 



Passy ; December 22, 1824 ; Seven-feet Equatorial. 



Position = 31® 32' nf 

 Distance ^z 9".79i 



7 0bs. 

 S Obs. 



Diffl = o''.6o'i 1 Excessively difficult. 



I have often in England, and frequently since my abode here, attempted to 

 observe this double star, but till now alway unsuccessfully. The sky is nearly ob- 

 scured by clouds, but the stars visible in the openings between the clouds are 

 remarkably brilliant ; they also pass through the field of the telescope extremely 

 steadily: yet the wind is tremendously high. NotA^ithstanding these favourable 

 circumstances the measures are attended with so much difficulty, that those of dis- 

 tance may perhaps be liable to an error of one, or even of two seconds. 



Passy ; December 23, 1824 ; Seven-feet Equatorial. 



5th and I2th magnitudes. 



Position = 30° 57' nf 

 Distance z= 9"-944- 



7 Obs. Diff. = 2° S' } ^ • 1 J-n; 1^ 



5 Obs. DifF. = o''.769 \ Excessively difficult. 



The small star is blue, and is invisible without slight illumination ; night remark 

 ably favourable for difficult observations. 



Mean Result. 



Position 31° 14' w/(i4 Obs.); Distance 9".867 ; 

 Epoch 1824.98. 



A measure in 1783, which gives the position 17** 15' nf, 

 can have no reliance placed on it, being contradicted by an 

 estimation which makes it 40** or 45° ; so that no conclusion 

 respecting the motion or rest of this star can be formed. (H.) 



