106 
M. Struve's Observations on Double Stars, 
8d-4th Mag. and 5th-6th Mag. 
The distance of these stars is supposed to increase. 
X Angle of position in 1782.7, 42° 48' S. Preced. HersckeL 
1802.1, 61 27 Ditto. 
1819.7, 67 41 • Struve. 
45. ^ Crozcn. R. Asc. 15" 33'. Decl. 37” 11' N. 
4th-5t!i and 6th Mag. 
Angle of position, in 1779, 26° N. Preced, Hersckel. 
Distance, . . 4". 7 Ditto, 
Angle of position, 1819, 29° 9' Struve^ 
Distance, . . 7",25 Ditto. 
46. I Balance R. Asc. 15*^ 54'. Decl. 10° 5S' S. 
4th and 7th Mag. 
These, stars appear to have undergone great changes, both in 
distance and in the angle of position. The great star appeared 
oblong both to Herschel and Struve ; so that it may be expected 
to separate into two. 
Angle of position in 1780.4, 1° N. Foil. Herschel. 
Ditto calculated. 
1819, 21° . 
Struve. 
Distance, 
1780.4, 6". 4 
Herschel 
1819, 9 .31 
Diff. of R. Asc. 
, + 0 .59 
Diff. of Decl. 
0 .38 
47. 49 Serpent. R. Asc. 16^^ 4'. Decl. 14° 1' N. 
7th-8th and 7th Mag. 
M. Struve has been able to observe this star only twice, on ac- 
count of the difficulty of seeing it. 
Angle of position in 
1783.3, 
21° 
33' 
Herschel, 
1803.4, 
32 
52 
Ditto. 
1804.3, 
35 
10 
Ditto. 
1820.1, 
46 
3 N. P^‘ec. Struve. 
Diff. of R. Asc. 
0".13 
Ditto. 
Diff, of decl. estimated, 
1 1 
Ditto. 
48, y Hercules. R. Asc. 16" 14'. Decl. 19° 35 N'. 
3d Mag. and the other very obscure. 
This star is so difficult to see, that M. Struve only observed 
it once on the 3d. June 1819. 
Angle of position 1781, 
1819, 
Distance observed, 1781, 
Ditto calculated, 1819, 
Diir. of R. Asc. 
19° • S. Prec. Herschel 
26° 8' Struve. 
41".8 Herschel 
40 .8 Struve. 
2 .58 Ditto, 
