distances and positions of 380 double and triple stars , &c. 275 
ot Herculis continued. 
Other measures are, 
Position. Distance. 
1781.03 ; 5".046. H. mean of 9 measures (MS.) from 1779 to 1782. 
1782.69; 27 0 10 ' sf; H. mean of 4 measures (MS.) in 1781 and 1783. 
1803.40; 31 SI sf-. Ditto, by 8 measures in 1802, 3, 4. 
1819.60; 26 36 sf; 5 .61. Struve, Additamenta, 192. M. Struve considers 
the angle as certain to within one degree. If our observations however be cor- 
rect, it must be nearly 3 0 in error. The mean of all the observations in Sir W, 
H’s MSS. is 30° 21', differing but 48' from ours. 
Position. Distance. 
1821.66 ; 25 0 45' sf; Struve. Vide Zach, Corr. Astr. viii. 524. 
1822.66; 5".i30. Ditto. Vide Zach, viii. p.369, also Astr. Nachr. 
No. 22. 
1823.; 4.600. Amici, Vide Zach, Corr. Astr. viii. p. 216. 
The cause of the continued disagreement between our mea- 
sures of the position of this beautiful star and M. Struve’s 
remains to be enquired into. M. Amici’s measure of the 
distance, it can hardly be doubted, is too small. 
No. CCXLV. R. A. 17 15 7 111 ; Decl. 24 0 5' S. 
39, 0 Ophiuchi ; III. 25 ; 
Pretty unequal ; large, red ; small, blue ; 7 and 8 magnitudes. 
Position. 
90—4.10 ) 
4.24 \ H 
4- 8 f 
3-3°J 
4. o 
4.30 
4.25 
4.40 
Mean — 4.13 
May 28, 1822. 
Five-feet Equatorial. 
np 
Position = 85°.47' np 
Distance = 12". 512. 
Distance. 
Parts. 
39- n 
40. o I 
40. ; 'fH 
39- 3 
40. oj 
37- 
3 8 - ° I 
37- 3 y S 
39- 2 
40. ij 
Mean — 39.05 
Z + 0.57 
Sir W. Herschel’s measures are, 
39.62 
1782.46 ; Position 87° 14 ' np ; Distance io".367 ; H. 1782. 
