568 
A CATALOGUE OF STANDARD STARS. 
Annual Secular Annual Secular 
AR. 1855.0 Variation.| Variation. AR. 1855.0 Variation.| Variation. 
h. m s 8 ^ hom s 8 8 
à Aquile 19 18 11.233|+-3.02489|—0.00153 || e Pegasi, 92137 3.872|4-2.94836|—0.00059 
A7 Sagittarii, 27 52.796) 3.65940/—0.00965 | 16 Pegasi, 46 28.021, 2.72578 --0.00513 
y Aquilx, 39 21.991, 2.85281¡—0.00080 | æ Aquarii, 58 20.150} 3.08414¡—0.00430 
a Aquile, 43 42.531) 2.92881,—0.00140 | 8 Aquarii, 99 910.770} 3.17178|—0.00771 
B Aquilz, 48 11.470} 2.94775|\—0.00150 | y Aquarii, 27 54.270} 3.08381|—0.00324 
ei Capricorni, | 20 9 36.510/-+-3.33175|—0.00810 || ¢ Pegasi, 22 34 13.880/+-2.98752/+-0.00211 
o? Capricorni, 10 0.414| 3.33500 —0.00810 || e Piscis Austr. 49 37.775, 3.33287|—0.02170 
o Capricorni, 20 35.152) 3.42960/—0.01118 | æ Pegasi, 57 32.469} 2.98307 -1-0.00530 
oe Cygni, 36 29.380| 2.04250/+-0.00240 | y Piscium, - 23 9 38.968) 3.10795|+-0.00029 
32 Vulpecule, 48 22.901; 2.55446\+-0.00264 | x! Piscium, 19 29.994!  8.07564|—0.00021 
| 
61 Cygni, med. | 21 0 24.775 +-2.67784|+-0.00392 | , Piscium, 23 32 29.646/-1-3.08413/-1-0.00281 
¢ Cygni, 6 46.027, 2.54826/--0.00384 | œ Piscium, 91 52.052 -1-8.07735 -1-0.00445 
B Aquarii, 23 55.385| 3.16430,—0.00711 
TABLE VI. SUPPLEMENT. 
> Annual | Secular > Annual | Secular 
AR. 1855.0 Variation.| Variation. AR. 1855.0 Variation.| Variation. 
A m.s 8 8 E h m.s 8 D 
a Cassiopeix, 0 32 18.284|4-3.35312|+-0.05440 || y Ursee Maj. 13 41 49.377 -1-2.37462 —0.01050 
o Persei, 3 13 59.591, 4.24123 /.-0.04850 || 8 Urse Min. 14 51 10.547 —0.26640 -1-0.10660 
¿ Urse Maj. 8 49 15.657, 4.14858 —0.04433 || 8 Draconis, 17 27 9.556 +1.85102 +0.00545 
0 Urse Maj. 9 23 8.047, 4.06080|—0.05615 || y Draconis, 17 53 14.502 1.89321 0.00350 
œ Ursæ Maj. 10 54 44.415, 3.77579,—0.08380 || æ Cephei, 2115 60.946 -1.43846 —0.00640 
y Urse Maj. 11 46 11.102|+-3.19678|—0.04440 || 8 Cephei, 21 26 46.341 -1-0.80464 — 0.03300 
for Aa! cos ð -1- 0.37 read — 0.37 
323 Cephei B., dele Airy, 1840. 
"Table III. is not affected by these errata. 
The order of some of the dates in Table II. is reversed in printing: that is, the date for Declination is before that for -A.R. 
It should perhaps have been stated, that the logarithms a, b, c, d in Table IV. are in the original order of Bessel; the English 
have arbitrarily changed a, b, c, d to c, d, a, b, and the same inconvenient alteration has been made in the American Ephemeris. 
Log a is the log of the annual precession in A.R. ; x, u! are proper motion; » is =) x : 
In reducing to apparent place for a fraction 7 of the year 1865 + n, we interpolate log a, b, c, 
we shall have (a° being A.R. for 1865), 
This includes all the sensible terms except the very small ones depending on © + Q, © — $, if the tables for 
NOTES AND ERRATA. 
In Table IL, 4 Ursze Minoris B., Ad! (Rob.) for —0".42 read —0!!.29. 
51 Cephei H., for Airy, 1845, read Airy, 1840, 1839. 
Sor Aa! + 7"67 read — 71.67. 
a! —a? = (A +n)a+ Bb+ Cc+ Dd+ (s -- n) w+ (tH n)? ». 
` include them, as do O. Struve’s Tabule Quantitatum Besselianarum. 
d for the time 1865 +n + 7, and 
Log A, B, etc., 
