APPENDIX. 
511 
TABLE X. 
Variations of rate and errors in longitude, made by one or both of Earnshaw’s time keepers, 
No. 543 and No. 520, during the circumnavigation ofTerra Australis, and from Port Jackson 
to the island Mauritius. 
Departure taken. 
Rate of timekeepers losing 
Variations of rate. 
Errors in long on arriving. 
Daily 
part of 
supple- 
mental 
errors. 
Place. 
Longit. East 
No.54d 
No 520 
Mean. 
During 
the 
passage 
Number 
of days. 
Daily ac- 
celeration 
With rate 
before found. 
With rate 
accelerated. 
Port Jackson 
Keppel Bay 
Broad Sound 
Sweers’ J. 
O / // 
151 11 49 
150 58 20 
149 46 53 
139 44 52 
8,63 
As a 
9,62 
14,74 
19, 52 
. Port J; 
21,41 1 
21,471 
14,075 
ickson 
15,515 
?irst rate 
n 
1,44 
0,06 
27,7 
51,9 
0,052 
Not used. 
/ // 
7 14 E. 
2 50,2 
t n 
2 3,6 e. 
4,46 e. 
3,28 
(The time keepers were let down in this passage, and set going with the difference of time allowed.) 
Observ. I. 137 3 14,8 
Connexion 1, 136 24 50 
Bustard Isles! 136 26 43 
Caledon Bay j 136 35 47,5 
Coepang Bay, 123 35 46,2 
Gr. se-i R y 123 9 37,6 
Port Jackson 151 11 49 
16,73 
19,63 
25, 36 
26, 85 
Wreck Reef 
Coepang Bay 
Port Louis 
155 18 50,5 
123 35 46,2 
57 29 57 
0,19 
14,931 
Not ascertained. 
As at Observation I. 
16,53 
33,99 
34,07 , 
First rates not known 
33,38 Latter rate 
34,08 After shipwreck 
34,13 Latter rate 
1,60 1 
0,20 
1,49 
36,74 
36,90 
2,61 
0,16 
16,4 
10, 
0,0116 
0 24,9 
2 41 
0 
16.9 
51,3 
40,2 
19.9 
0,0947 
0,0039 
0,0371 
4 35 
3 22,2 
19 52,4 
5 42,5 
0 59,5 
2 3,7 
12 11,6 
26, 
Not used 
14 35,9 w. 
36,2 
35, 
0,0721 
Not used 
12 48 e. 
10 43,5 
0 40, 
16,1 
3,52 
2,41 
18, 2 
17, 2 
33, 7 w. 
1, 1 E 
18, 4 
The irregularity of this table, compared with Table VII. of the Appendix to Vol. I., arises 
from its having been sometimes found advisable to make use of one time keeper in preference 
to both, — from some stations being fixed by the survey where no rates are found, and latterly 
from No. 543 having stopped. In other respects, the explanation which follows the former 
table will generally apply here. , 
