104 Mr. Herschel’s and Mr. South’s observations of the apparent 
Castor continued. 
Feb. 3, 1822. 
Five-feet Equatorial. 
Distance. Distance. Distance. 
Parts. 
Parts. 
Parts. 
17.0^1 
20.5^ 
I 7 - 51 
16.7 
19.4 
. 18. 0 
17.1 
18.0 
>S with 381 \ 9 9 5 q 
with 303 18. 8 > 
18. 5 | 
17.9 
19.^ 
19 - 3 J 
16.1 
Distance 5"-394 
Mean — 18.27 
Z ~ — 1. 19 
-S with 381 
Five-feet Equatorial. 
17.08 
Feb. 1 1 , 1823. 
The evening being very unfavourable for procuring satis- 
factory measures of double stars generally, in consequence 
of the uniform diffusion of thin clouds, which gave to the stars 
of the 1st and 2d magnitudes the appearance of being only 
of the 3rd and 4th, the instrument was directed to Castor 
when it was half an hour west of the meridian : the two 
stars were admirably defined, perfectly steady, without con- 
centric rings, and of the 5th and 6th magnitudes only, and 
the following angles were gotten ; they were highly satis- 
factory. 
Feb. 11, 1823. 
Position. 
Feb. 12, 1823. 
Position. 
O' O' 
6.30"! 5.10' 
4 - 5 2 3-37 
4.50 4. 1 
6.40 4.15 
5 - 3 ° 5 - 0 
6.21 „ . . . , 3.46 
6 . o VS Potion = 5. 45 S P 3.45 
6. 8 4.30 
5.36 4.42 
6.22 5. 8 
5.54 3.18 
5.11 4. o 
4.47J 4*48. 
Distance. 
Parts. 
1 6. 0 
17. o 
> 7 * 
Five-feet Equatorial. 16. 
16. 
* 7 * 
1 7* 
18. 
18. 
1 7- 
, ..Position =:4°a8 sp 
Distance r= 5".03o 
5 
0 
9 
5 
7 
1 
o 
8j> 
4H 
Mean = 17.26 
Z = — 1.33 
Mean — 4. 1 8 
Mean = 5.45 
* 5-93 
