398 Capt. Kater’s experiments for determining the variation 
Clifton, 5th October, 1818. Barometer 29,0 inches, thermometer 42 0 , chrono- 
meter too fast 2 s , 8. Pole star on the meridian by the chronometer, 1 2h.om.54*,4. 
Chronometer. 
Level. 
Time from 
the 
meridian. 
N. v. Sines. 
Readings, &c. 
h. m. s. 
1 1.20.20 
11.45. 11 
1 1.51.10 
1 1 -5 5 - 1 3 
1 1.58.10 
12. 1.50 
12. 5.28 
12. 8.17 
12.12.55 
12. j6. 10 
12,18.50 
) 2.25.10 
+ 3 2 
4- 16 
4- 26 
+ 3o 
-f 26 
+ 31 
+ 2 5 
4 - 3 2 
4 - 36 
4- 23 
+ 24. 
+ 2 7 
— 24 
— 39 
— 33 
— 2 9 
— 34 
— 29 
~ 3 6 
— 29 
— 24 
— 37 
— 38 
— 34 
m. s. 
21.34 
I 5-43 
9-44 
5.41 
2.44 
0.56 
4-34 
7- 2 3 
12. 1 
15.16 
17.56 
24. 16 
4424 
2350 
0902 
0307 
007 I 
0008 
0198 
0519 
1 374 
2218 
3060 
5600 
. 0 / V 
1st Vernier - 58.27.50 
Second - - - 40 
Third - - 10 
Fourth 35 
Mean - - 58.27.33,75 
360. 0. 0 
Level - - — 1. 9,60 
Index . - 4- 0.18,00 
12) 418.26.42,15 
Observed Z. D. - 34-52.13,51 
Refract. - 4- 40,03 
Correct. - - — 10,96 
2 r'C. - — 0,06 
(Z-Z') - + 0,30 
True Z. D. - 34.52.42,82 
Mean P. D. for 1818 4- 1.39.44,15 
Precession, &c. - — 13,17 
Cc. Lat. 36.32.13,80 
Lat. of Clifton 53.27.46,20 
4-328 
—386 
*75 
( + 228 386) // M 
- — - x 2,4=2—69,6 cor. for the level. 
Const. Log. - - 3-79593 0 4 
Log. 1753(4-4) - - 7-2437819 
Cor. «— 1 0^,96 Log. - 1.0397123 
