DECLINATION. 
would have been given at ihe fame moment by the centre of 
the wires. : . 
The three tables which follow are to facilitate ny - of 
ang Mea: circle. y give the = ap- 
plied to an obfervation made erval ne time 
from ae tual of a (tar over pe meri 
ata given 1 
1ahn, 
The ufe of eee Tables II. and III. has been ex. 
plai ained in the 
The above pair contain all the correCtions that occur 
mechanical conftru@ion of i te tranfit inftrament, which 
But a e doubts are 
"5 eta we fhail 
ina > except 
t 
wil found under that article. 
entertained relative to Dr. Bradle 
comparative table of refractions, as derived from 
1 
f Paris, thefe nu cn muft now be mal- nex a 
ve ht eo? ice ae fuperior tranfit, and by 0.88 for the fe obfervations of different = as given in the 
iatetiat: third vol. of Mr. Vince’s Aftronomy. 
A Table of Refraétion, according to different Authors. The Barometer 0".760. 
coe ae Laplace. | Bradley. Burg. Mayer. Piazzi. 4 Delambre.| Mayer. 
— 10 Ii". 10”. 9 r1".3 ri’.0 ri". Tr 4 
ro) 10.4 10.6 10.9 10.6 10.8 10.8 10.0 
10? + 10 10.3 10.1 10 5 10.2 50.3 19.3 
20 9.9 9-3 10.1 69 99 9.5 
30 9.6 QuI 9-7 9.5 9-5 9-4 
— 10 2.2.9 23.0 23.4 2257 23.1 53.2 
‘) 22.0 21.9 22.5 21.9 22.2 Oe 21.9 
20 + 10 21.2 20.9 21.6 QI 21.0 25.2 
20 20.4 20.0 20.8 20.4. 20.1 20.3 
30 19.47 18 8 20.1 19.7 1.4 19.5 
— — 10 362 36.5 By.t 36.0 36.8 36.9 
° 34.8 34.8 35+7 3467 35:2 35.2 34-7 
30 + 10 33-4 33-2 34.3 3365 33-6 ~ 38.5 
20 Cpe) B17 33.0 32.3 321 32.2 
30 31.0 29.8 31.2 31.2 30.8 30.9 
a 10 59 53:0 53+9 523 oo't 53°7 
° 50.8 50.5 51.8 50.4 539 51.2 504 
40 + 10 48.9 48.2 49.8 48.6 48.6 48.9 
20 47.1 46.0 47.9 46.9 46.5 46.8 
30 45-4 43-9 46.0 45-4 43.8 | - 449 
— 10 75:0 75-2 76.5 74-2 75°7 76.2 74:3 
° 42.1 7167 73-5 7165 72-2 72.6 7465 
59 eo 69.3 68.4. 70.7 8.9 69.0 69.4 68.9 
20 66.8 65-4 68.0 66.6 65.9 O6.4 66.6 
30 64.4 62.3 65.3 64.4 63.3 63.7 64.4. 
— 10 108.8 ,  FOQsT IIL. 107.6 110.8 110.5 107.8 
re) TO4.6 100.4 104.4 103.7 105-7 105.4 103.8 
60 + 10 100.6 09.3 102.7 100.0 160.9 100.7" 100.1 
20 96.9 94-9 96.0 96.6 96.6 96.5 96.7 
30 93-5 90-4 92.8 93-4 92.6 92-5 93-5 
— 10 171.8 172.5 1755 1ZO.T 17532 174.6 170.2 
° 165.1 164.4 168.8 163.8 165.0 166.5 163.9 
40 + 10 158.8 14760 162.4 158.0 159.6 151 VG5e1 
20 153-0 149.9 156.2 152.6 152-7 152.4 15267 
30 147.6 142.8 150.9 Ta7e5 146.4 145.1 119.7 
— Io 349.0 349-3 354-9 34401 350-9 352.5 34440 
° 3325 332.5 3.40. 33161 334-7 330-4 331.3 
80 + Io. 31958 317.5 327-9 319.0 31965 3234 319.0 
20 303.1 803.5 315-4 307-9 306.0 30709 303.0 
30 297-9 289.1 302.9 296.6 20727 205.2 298.4 
— 10 643-9 657.0 665-9 645-3 649.8 660.1 643.6 
fo) 647.8 626.7 640.1 619.6 618.2 62043 619.8 
85 + 10 594-3 598.5 616.9 593-6 5918 601.3 5978 
20 572-5 571-4 593 +4 5/33 506.7 57020 5770+ 
30 55262 5445 599-9 55204 543-2 5522 558«3 
— 10 2102.2 2200 2 2179.3 2100.0 2134.3 2412.1 2061.0 
. © 2106,3 2096.5 2090.2 1985.9 2016.5 2O14.7 1985.2 
go + 10 2026.3 200261 2014.3 1884.8 1944.1 1925.0 1914.7 
20 19501 IQII.7 1937.4 1784.5 1862.5 1843.5 1849.9 
30 1852.8 1821.1 1860.8 1696.3 178.1.6 1767.8 1698.4 
Hh: DECLINATION, 
