344 Mr. Herschei/s and Mr. South’s observations of the apparent 
57 Aquilas continued. 
Position. 
90 — 8.58 
8.40 
8-35 
8.15 
8.50 
h S 
August 19, 1823. 
Seven-feet Equatorial. 
6 and 6 ~ magnitudes. 
Distance. 
Parts. 
Si 
5 
1 5 3- 
152. 
!53- 0 
x 53- 3 
i5»- 3. 
VS 
Mean — 8.40 
Position = 8i° 20' sf 
Distance = 36."3i9. 
Mean. 
Mean = 152.27 
Z = — 1.67 
1 5 I> °5 
Position 8i° 8' sf. Distance o > 6 ".itfo ; Epoch 1823.60. 
Other measures are, 
1781.83; Position 8i° 55' sp ; Distance 29". 46; H. Cat. of 1782. 
1819.71; 78 sf; 20 68 1; Struve; computed from a R A 
= o’.zg, and Pos. 78° sf; Dorp. 
Obs. Addit. ii. 196. 
1821.79; 81 48 sf ; 36 200; Struve; Dorpat Obs. iii. 1821, 
Oservationes 5, 35. 
M. Struve’s distance of 1819 being computed from a 
small difference of R. A. and a great angle of position, can 
lay no claim to confidence. The position has changed ma- 
terially, no less than 16 0 57' in 41.77 years ; or — o°.405 per 
annum ; unless sf be to be read for sp in the observation of 
1781. 
No. CCCX. 
Position. 
o o / 
9° 3 1 * 5' 
31.12 
3 1 - 6 
32. o 
3i.i5 
Mean — 31.20 
R. A. 19 0 45' ; Decl. 19 0 53' N. 
Struve, 647. 
August 16, 1823. 
Five-feet Equatorial. 
6 and 7 magnitudes. 
Position =58°. 40' sf 
Ditance=4i".944 
Distance. 
Parts, 
f >34- 2 
I 139- o 
133- o 
*3*- 5 
137. 5 
Mean = 135.17 
Z = — 2.36 
Stars blotty. 
132.81 
