distances and positions of 380 double and triple stars , &c. 313 
4 s Lyrag Borealior continued. 
Other measures are, 
• 779.83; Position 56° 5' nf; Distance 3 ,, < 437; single measure; H. Cat. of 1782. 
1803.83; 59 14 nf-, H. Mean of 3 measures in 1802 and 1804, 
1819.69; 60 42 nf; Distances". 83; Struve, Additam. p. 194. 
1821.02; 64 18 nf; 3 707; from A decl. = 3"-34; Struve, 
iii. 143. 
The measures on the whole are favourable to a slow va- 
riation in the angle of position, as surmised by Sir William 
Herchel in 1804; but as the amount does not exceed o° 19 
per annum, it must be regarded as still open to further 
enquiry. 
No. CCLXXVII. R. A. 18 11 38™ ; Decl. 39 0 27' N. 
Debilissima inter 4 (e) et 5 Lyras. 
October 27, 1823. 
Twenty-feet Reflector. 
Equal, or nearly so ; each of the 15th or 20th magnitude. 
Its existence cannot be even suspected with either of the 
two Equatorials. The seven and ten-feet reflectors (the 
former of six, the latter of nine inches aperture) in like 
manner fail to give any indication of it; but all of them 
shew a small star of about the 10th magnitude preceding 
them both, and making an isosceles triangle of about ioo° 
at the vertex with e and 5. The twenty-feet reflector how- 
ever shews a double star, whose distance is one fourth that 
of e from 5 (i.e. 53'') i n t^ e middle between them. Its 
MDCCCXXIV. S S 
