distances and positions of 380 double and triple stars, &c. 18 9 
Position 2 9 0 27' sf ; Distance 2 6". 203 ; 1822.66. 
Sir W. Herschel states the angle at “ about 25 or 30° sf” 
The distance given by him (about if minute) is to be re- 
garded only as a vague estimation. 
The object-glass of the telescope employed in the measures 
of May 10, 1821, had an aperture of 6 inches, and a focal 
length of 9 feet ; being found however imperfect, it was laid 
aside almost immediately, and replaced by the present 7-feet. 
No. CLXX. U. A. i3 h 46“ ; Decl. 33 0 43' N. 
( H. C. 162 ;) Struve, 448 ; 
Very nearly equal ; 9 and 9f magnitudes ; bear but slight 
illumination. 
Position. Distance, 
o e / Ma y 2 5 > 1823. Parts. 
9 °~ 3 2ilo l Seven-feet Eauatorial. 34 * °1 
Bootis continued. 
Mean result. 
Mean — 31-32 Distance — 7 * 7 ^®* Mean — 32.55 
Z = — 0.19 
32-36 
