and positions of 36 double and triple stars, &c. 
337 
No. XV. R. A. i 4 h 37 m ; Decl. 27 0 5 1' N. 
e Bootis ; I. 1 ; H. and S. 185. 
continued. 
Passy; June 14, 1825 ; Seven-feet Equatorial. 
2nd and 9th magnitudes. 
Position = 53 ° 35' np 
Distance = 3 ".iz6 
7 Obs. 
5 Obs. 
Diff. = 2 0 36' 1 Rather difficult. 
DifF. = o".529) Difficult. 
Observed with 181 ; stars on the meridian and well defined, but are not steady. 
Mean Result. 
Position 55 0 2 3' np (5 Obs.); Epoch 1824.47 ; 
Position 54 0 21' np (49 Obs.) ; Epoch 1825.43 ; 
Distance 3 ".356 (25 Obs.); Epoch 1825.44. 
Taking the means of the above angles and epochs, allow- 
ing each a weight proportional to the number of measures 
on which it rests, we get for the mean Epoch 1825.34 the 
angle of position 54 0 26' np. This, compared with the 
measures of 1822, gives -f- i° 27' for the observed motion 
in the interval of 2.79 years. The motion computed on a 
supposition of -f-o°.4378 per annum assigned in a former 
paper, should be -J- i° 14 ', differing insensibly from that 
actually found by observation. The motion of this star is 
therefore very satisfactorily confirmed both in direction and 
quantity ; and when we reflect on the extreme difficulty of 
it (in respect of position), this will serve to give great confi- 
dence in results which depend on a great number of mea- 
sures, however wide of the mark individual measures may 
be. (H.) 
MDCCCXXVI, 
X X 
