410 Capt. Kater’s experiments for determining the variation 
Shanklin Farm, May 14th, 1819. Barometer 30,08 inches, thermometer 5o°,o. 
Chronometer too fast 4™. 43 s . Pole star on the northern meridian by the chro- 
nometer 9 h .33 Ta -3 5 s - 
Chronometer. 
Level. 
Time from 
the 
meridian. 
N. v. Sines. 
Readings, &c. 
h. m. s. 
9.10.30 
913.18 
9.18. 0 
9.26.45 
9 - 44 - 6 
9 46.10 
9.48.15 
9.51. 6 
+ 20 
+ 19 
+ 1 I 
+ l 7 
+ 24 
+ J 3 
+ 2 5 
+ *5 
— 16 
— 18 
— 26 
— 19 
— 10 
— 22 
— 10 
— 20 
h. m. 
23.05 
20. 1 7 
1 5-35 
6.50 
10.31 
12 35 
14.40 
l 7 - 3 1 
5068 
39H 
2311 
0444 
1053 
1507 
2047 
29 1 9 
0 / // 
1st Vernier - 328. 8.15 
Second - - 8. 2 
Third - - 8. 2 
Fourth - - 7.55 
Mean - - 328. 8. 3,5 
Level - 4 - 3>6 
Index - 4 * 13*° 
+ H 4 
— 141 
2408 
8) 328. 8.20,1 
Observed Z. D. - 41. 1. 2,51 
Refract. - 4- 50,92 
Correct. - - 4 - J 3>97 
2 r'C. - 4- 0,08 
True Z. D. - 41- 2. 7,48 
App. P. D. - — 1.39.3^32 
Co. Lat. - 39.22 36,16 
( *■}“ J 4 4 '— 14 - 0 ^ ^ y r 11 1 
■■ — x 2,4~ -f- 3,6 cor for the level. 
2 
Const. Log. - - 3.7634825 
Log. 2408 (4-4) - 7.3816565 
Correct. + 1 3^97 Log - 1. 145 1390 
Latitude of Shanklin Farm 50.37.23,84 
