distances and positions of 380 double and triple stars, &c. 183 
J Ursae Majoris continued. 
Position. 
» o • 
90—334 9 " 
3i 45 
32.12 
30.54 
32 . 4 
3 1 - °. 
31.10^ 
31-3° I 
30.50 y h 
31.20 1 
3 I - 1 5 J 
April 9, 1823. 
Five-feet Equatorial. 
s f 
3 and magnitudes. 
Position == 58° 23' sf 
Distance = 
Mean — 31-37 
During these measures of distance, the 
stars being too bright, a green glass was 
interposed, which improved them greatly, 
especially when a little smoked ; the dia- 
meters being thus reduced, and the glare 
taken off. 
>> s 
Distance. 
Parts. 
48. 8' 
49. 2 
49. 8 
43- 5 
48. 5 
45- 5 
46. o, 
44- ©I 
49- o I 
46. 5 1 
46. 7 
44- 5 
47. 2 
44. 6^ 
46. o S 
44. o H 
45- z H 
46. o S 
Mean — 46.36 
Z — — 0.49 
45-87 
Mean result 57 0 46' sf; Distance i4"-455; Epoch 1822.24. 
This star was observed to be double by Bradley, in 1755, 
by whose observations, according to Struve, its distance 
comes out i3".88, and its Position 53 0 f sf Sir W. Herschel 
saw it double on the 9th April, 1774, with a power of 211, 
and has given its measures in his first Catalogue as follows : 
Position 56° 46' sf ; Distance 14". 50, by two years observa- 
tions, from 1779 t0 1781. These measures coincide so 
■closely with our own, that no suspicion can arise of any real 
considerable change in this star. The following strange 
observation of M. Flaugergues, recorded in the Connais- 
sance des Temps, An. xi. page 360, is therefore the more 
surprising. After recounting his habitual observations of it. 
