3^4? M. Struve’s Observations on DouMe Sfarsu 
60. /3 Lyra. li. Asc. 18^^ 48'. N. Decl. 38" 10'. 
This star is quadruple. The first is of the 9th Mag., the se- 
co7id of the 8d or 4th Mag., the third oi the 6th Mag., and the 
fourth of the 10th Mag. The following are M. Struve’s obser- 
vations. 
1st and 2d. 
Diff. of R. Asc. — 3",06 
Angles of position, 48° 6 N. Free. 
Distances, - 66".6 
DifF. ofDecl. 4- 49". 9 
2d and 3d. 
4- l".895 
60° 15 S. F 0 II, 
47".8 
— 4l".5 
2d and 4th. 
2".336 
67° 6 N. Foil. 
77".0 
71".2 
Sir.iW. Herschel observed only the distance between the se- 
cond and third in 1779, and found it 48".95, and the angle of 
position 60" S. Foil., which agrees nearly with Struve’s obser- 
vations. 
61. ^ Eagle. K. Asc. 18^ 51'. N. Decl. 18° 28'. 
5th-6th and lOth-llth Mag. 
These stars are difficult to observe. In 1819, the dif- 
ference of R. Asc. was — 1".215, and the angle of position 
33°.9 S. Free. Flence the distance is 21". 85, and the difference 
of declination — 11".91. In 1781, Sir W. Flerschel found the 
distance to be only 7". He did not observe the angle of posi- 
tion. He could with difficulty see the small star with a magni- 
fying power of 227. 
62. 56 Dragon. R. Asc. 19^^ 5'. N. Decl. 76° 47'- 
Sir W. Herschel remarks, that the two stars are nearly of 
equal magnitude. M. Struve has never been able to see it 
double, though he has often examined it with great care. 
68. -^ Lyra. R. Asc. 19^ 8'. N. Decl. 88° 51'. 
5tll. and 8lli Mag. 
The difference of R. Asc. in 1819 was -|- 2".41, the angle of 
^sition 5° 6' N. Foil. ; :and hence the distance is 28".8, and the / 
difference of declination 2".76. The angle has changed very 
remarkably since the time of Sir W. Herschel, since he found 
it to be 82° S, Free, or 212° in 1779,7 and M. Struve observed 
it to be 5° 6 N. Folk, or 5° 86 in 1819,9. Such a variation in 
40 years, seems very strange. M, Struve conjectures that Sir 
