DECLINATION. 
Tasxe III. 
The Numbersin this Table are always additive. 
General Table. Part II. Argument. Hour Angle. 
m.-s.[-s 1 S. Dif.j mM. s.] s. Diff. 
@ ©f0.000 8 10] 0.041 4 |! 10}0.205 | 1, 
1 CfO.000 20] 0.045 4 2010-217 | 1, 
2 ©[ 0.000 30] 0.049 | 4 30/0.229 | 5) 
3. clo.oo!1 4010-053 | 4 40/0.241 | 1, 
4  0f0.002 500-057 | 4 50/0.254 13 
5 010.006 9 ©°0.061 13. 0}0.267 
5 14 
10] 0.007 10| 9.066 5 10|0.281 or 
20] 0.008 20] 0.071 5 20/0.295 i 
30] 0.009 30} 0.076 30/0.310 | 16 
40] 0.010 4c] 0.081 3 4010.326 | 16 
50/ 0.011 50,0.087 | 6 50) 0.342 | 1, 
6 o|0.012 fo. €1 6.093 14 010.359} / 
aE ri 17 
10] 0.013 soa a, 10|0.376 13 
20] 0.014 "20)0.107 |, 20/0.394 19 
30] 0.016 3c] 0.114 M 30] 00413 19 
40] 0.018 4o}O.t2t | % 40) 0.432 | 30 
50} 0.020 5c] A129 | g 50} 0-452 | oy 
7 0.022 Il C!0.137 15 Cj0.473 
8 a1 
10] 0.024. 110.145 | 9 IC}0.494 | 4 
20] 0.026 20| 0.154 20| 0.516 23 
30] 0.029 30| 0.163 - 30] 0.539 oa 
40| 0.032 40, 0.173 | 56 40| 0.563 » 
5c] 0.035 5c) 0.183 | oy 5010-587 | 
8 of 0.038 12 olO 194 16 o\o0.612 | 79 
Explanation of the Tables. 
I. That which claims a decided preference before all 
others, is a catalogue o principal ftars vifible in the 
northern hemifphere, deduced from the obfervations of Dr. 
Mafkelyne. 
If. A table of the correGtions of RA in time for the 
flars in ce nen catalogue, to every ten th day of the 
year; copied exaily from Dr. ne’s, and printed by 
his per oe This table contains th the precef- 
fion from the beginning of the year, sees ia and folar ine- 
nae of preelion Na le with a 
ons of fome of the ftars, the aint ee 
to each flar will be ane: in this copy at the bottom of its 
refpe€tive column. To this table, a column for « Herculis 
has been added in its place by the author. 
III. A table of the corrections of RA in time for the 
fame ftars, to every 1oth degree of longitude of the moon’s 
node ; comprifing the effe@ of nutation and the equation of 
the equinoxes. 
IV. and V. are two fimilar tables of the correétions cf 
- NPD for the fame ftars. The firft comprifing the effects 
of preceffion, al and folar inequality, for every roth 
he fecond, the effe& of nutation for 
of them, contain any alaaauee ae the 
motions in the ftars thence. which feemed not to be 
peliciently afcertained at the time thefe tables were con- 
ru 
VI. A table of the mean RA and NPD of polaris for 
an. O. 1800, and io years following ; together with the 
corrections both in nd NPD for every roth day of 
the year, and every roth degree of longitude of the moon’s 
¢ 
Thefe new tables were calculated for the year 1800. 
But if its mean 
RA be brought up carefully to the begisning of a year, the 
numbers in the firft part will pear err 1 at the utmoft 
in RA; nor thofe in the column 07.013 from the 
truth, if the table be rightly a 
Numbers VII. ies and X. are copied from Dr. 
eek for finding the annual preceffion of a ftar in 
d NPD, with thee refpeCtive multipliers. 
lis that has been made in 
and 1X. where the argument, the RA of the ftar, is altered 
from the RA in degrees, &c. to RA in time; and a mean 
interpolation has been ee between the numbers 
vens from its mean pofition ; or, vice ver/a, by applying the 
numbers taken out of the tables with a contrary fign, for 
deducing the mean as of any ftar from its obferved or 
apparent fituation $ 
Tabl . for facie the effe€t of aberration on a ftar’s. 
A in time, ie every 10th day of the year, and each hour 
of the fiar’s 
Table XII. for Finding the effeG& of nutation on the 
flar’s RA in time, for every roth cs of longitude of the 
moon’s node, and each ‘ed of the ftar A. 
able eae equations of the sa ueoees in RA in 
time, copied fr fro re Mafkelyne. 
Thefe ali ae to the RA of the ftar, and its at 
corrections. The following give the corre€tions for NPD : 
Table XIV. for finding the eifect of apes on the 
NPD of a flar, for every roth day of the year, and each 
hour of the ftar’s 
Table XV. for finding the farther- effet of aberration, 
for at Toth day, according to the deelination of the ftar 
e XVI. for finding the femi-annual folar ene 
a NPD, for every roth day, and each hour of the ftar’s 
Table XVIT. for finding the effet of nutation on the 
NPD of the flar, ae acl roth degree of longitude of the 
moon’s node, and e r of the far’ s RA. 
It is hoped ee: a ae will be found as convenient to te 
practical affronomer as they have been to the anthor, who. 
i He pubhfhes them 
with diffidence ; ae flatters = that they are not liable 
to many errors, se he aut ot feel confcious of any 
which it ee in bis a toa 
ea tables were Sout hed by the Rev. Mr. Wol- 
lafton in hie faleiculus of afronomical obfervations: ne has 
nl e labour of F reducing © obfervations of right afcenfion 
and declination, and will no doubt aa ica as a value 
able acquifttion by the practical ua 
Table XVIII. contains the mean rece to every 
ro minutes of zenith diltance, as pee from the obferva- 
tions of Dr. Bradley: it is taken from the Greenwich ob= 
fervations of 1797, as there given by the aftronomer royal. 
Table XIX. is the augmentation of the ae of 
the moon, sola no explanation. 
Table s the diminution of the horizontal parallax of 
the moon, arifing from the {pheroidal figure of the earth 
the ellipticity is here {uppofed —3,, according to the latet 
wie crag of the figure of the earth, 
<XI. contains the corre&tion to be applied to an . 
chenacen with a fixed inftrument, when the ftar has pafled 
or not arrived at the vertical wire, to reduce it to that which 
wou 
