and positions of 458 double and triple stars, &c. 
45 
No. CCCCXXXIX. R. A. 3 h 38- ; Decl. io° 3 6 ' 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 0 32 ' nf 
Distance = 9". 791 
7 Obs. 
5 Obs. 
Diff! = o°.6oi } Excessivel y 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. Notwithstanding 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. 
5 th and 12 th magnitudes. 
Diffi = o".76 9 } Excessivel y difficult. 
The small star is blue, and is invisible without slight illumination ; night remark 
ably favourable for difficult observations. 
Mean Result. 
Position 31 0 14 1 nf(i 4 Obs.); Distance 9 " .867 ; 
Epoch 1824.98. 
A measure in 1783, which gives the position 17 0 15' nf, 
can have no reliance placed on it, being contradicted by an 
estimation which makes it 40° or 45 0 ; so that no conclusion 
respecting the motion or rest of this star can be formed. (H.) 
Position = 30° Si' nf 7 Obs. 
Distance — 9". 944. 5 Obs. 
