XIV 
table 
No. 11 
XV 
AN ACCOUNT of the going of the Six CHRONOMETERS selected for the determination of Longitudes, from 
Week being shewn of each Chronometer 
Week 
ending 
228 with 
254 with 
259 with 
254 
259 
369 
404 
25 
228 
259 
369 
404 
25 
228 
254 
369 
404 
25 
S 
S 
S 
S 
S 
S 
S 
S 
S 
S 
S 
S 
S 
S 
5 
May 13 
G0.61 
G2.77 
G0.923 
L4.96 
L7.46 
L0.61 
G2.16 
GO.313 
L5.57 
L8.07 
L2.77 
L2.16 
L 1.747 
L7.73 
L 10.23 
20 
Ll. 
3.3 
0.86 
5.93 
9. 
Gl. 
4.3 
1.86 
4.93 
8. 
3.3 
4.3 
2.44 
9-23 
12.3 
27 
0.93 
2.93 
0.57 
4.86 
9.536 
0.93 
3.86 
1.4 
3.93 
8.606 
2.93 
3.86 
2.36 
7.79 
12.466 
June 3 
1. 
2.36 
2.036 
4.464 
10.43 
1. 
3.36 
3.036 
3.464 
9-43 
2.36 
3.36 
0.324 
6.826 
12.79 
10 
0.034 
2.8 
3.107 
3.14 
10.61 
0.034 
2.834 
3.141 
3.114 
10.576 
2.8 
2.834 
GO.3O7 
5.94 
13.41 
17 
G3.11 
3.14 
2.32 
2.57 
12.68 
L3.11 
0.03 
LO.79 
5.68 
15.79 
3.14 
0.03 
L0.S2 
5.71 
15.82 
24 
4.14 
2.7 
L0.14 
1.535 
11.32 
4.14 
L1.44 
4.58 
5.675 
15.46 
2.7 
Gl.44 
2.84 
4.235 
14.02 
July 1 
3.7 
3.5 
0.14 
1.07 
11.43 
3.7 
0.2 
3.84 
4.77 
15.13 
3.5 
0.2 
3.64 
4.57 
14.93 
8 
3.463 
3.68 
Go. 14 
0.714 
10.8 
3.465 
GO.215 
3.325 
4.179 
14.265 
3.68 
LO.215 
3.54 
4.394 
14.48 
15 
3.607 
4.25 
0.714 
GO.036 
9.964 
3.607 
0.643 
2.893 
3.571 
13.571 
4.25 
0.643 
, 3.536 
4.214 
14.214 
22 
3.57 
4.214 
0.357 
0.036 
9.57 
3.57 
0.844 
3.213 
3.534 
13.14 
4.214 
0.844 
3.857 
4.178 
13.784 
29 
3.07 
4.5 
0.286 
0.107 
8.82 
3.07 
1.43 
00 
2.963 
11.89 
4.5 
1.43 
3.214 
4.393 
13.32 
Aug. 5 
3.2S6 
4.393 
LO.357 
0.18 
5.18 
3.286 
1.107 
3.643 
3.106 
8.466 
4.393 
1.107 
4.75 
4.213 
9.573 
12 
2.536 
4.36 
0.57 
0. 
7.536 
2.536 
1.824 
3.106 
2.536 
TO.O72 
4.36 
1.824 
4.93 
4.36 
11.896 
19 
3.036 
4.464 
0.75 
0.43 
7.82 
3.036 
1.428 
3.786 
2.606 
10.856 
4.464 
1.428 
5.214 
4.034 
12.284 
26 
3.716 
4.93 
0.536 
1.893 
5.5 
3.716 
1.214 
4.252 
1.823 
9-216 
4.93 
1.214 
5.466 
3.037 
10.43 
Sept. 2 
3.536 
5.93 
0.18 
2. 
4.036 
3.536 
2.394 
3.716 
1.536 
7.572 
5.93 
2.394 
6.11 
3.93 
9.966 
5.07 
6.643 
G 1.036 
2.5 
3.18 
5.07 
1.573 
4.034 
2.57 
8.25 
6.643 
1.573 
5.607 
4.143 
9.823 
The “ Daily Rates” which are here given, are the actual daily differences of each Chronometer on the others, as shewn on 
reference is made. A Table of this nature much facilitates the regulation of Chronometers, by bringing into a small compass, 
It will also generally shew the week in which any Chronometer may change its established rate ; and as this sometimes happens 
on the mean Longitude, which requires to be met by a special correction, this Table serves to fix the periods, and regulate the 
the commencement the Voyags to the close of the season of Navigation of 1819 ; the average Daily Rate in each 
successively on the other five. 
369 with 
404 with 
25 with 
Temperature. 
228 
254 
259 
404 
25 
228 
254 
259 
369 
25 
228 
254 
259 
369 
404 
j Mini- 
mum. 
M«an. 
S 
S 
S 
S 
S 
5 
S 
S 
S 
s 
S 
S 
S 
S 
S 
0 
0 
0 
L0.923 
L0.313 
G 1.747 
L 5.886 
L8.383 
G4.96 
G5,57 
G7.73 
G5.886 
L2.5 
G7.46 
G8.07 
GlO.23 
G8.3S3 
G2.5 
0.86 
1.86 
2.44 
6.79 
9.86 
5.93 
4.93 
9-23 
6.79 
3.57 
9. 
8. 
12.3 
9.86 
3.07 
0.57 
1.4 
2.36 
5.43 
10.106 
4.86 
3.93 
7.79 
5.43 
4.676 
9-536 
8.606 
12.466 
10.106 
4.676 
2.036 
3.036 
0.324 
6.5 
12.466 
4.464 
3.464 
6.826 
6.5 
5.966 
10.43 
9.43 
12.79 
12.466 
5.966 
3.107 
3.141 
L 0.307 
6.247 
13.717 
3.14 
3.114 
5.94 
6.247 
7.47 
10.61 
10.576 
13.41 
13.717 
7.47 
45 
55 
49.5 
2.32 
GO.79 
GO.82 
4.89 
15. 
2.57 
5.68 
5.71 
4.89 
10.11 
12.68 
15.79 
15.82 
15. 
10.11 
4<5 
65 
54.5 
0.14 
4.58 
2.84 
1.395 
11.18 
1.535 
5.675 
4.235 
1.395 
9-785 
11.32 
15.46 
14.02 
11.18 
9.785 
49 
68 
37.5 
0.14 
3.84 
3.64 
0.93 
11.29 
1.07 
4.77 
4.57 
0.93 
10.36 
11.43 
15.13 
14.93 
11.29 
10.36 
46 
68 
58.7 
0.14 
3.325 
3.54 
0.854 
10.94 
0.714 
4.179 
4.394 
0.854 
10.086 
10.8 
14.265 
14.48 
10.94 
10.086 
45 
64 
60 
0.714 
3.893 
3.536 
G0.678 
10.678 
L 0.036 
3.571 
4.214 
0.678 
10. 
9.964 
13.571 
14.214 
10.678 
10. 
49 
66 
56.5 
0.357 
3.213 
3.857 
0.321 
9.927 
0.036 
3.534 
■4.178 
0.321 
9.606 
9.57 
13.14 
13.784 
9.927 
9.606 
45 
66 
57 
0.286 
2.784 
3.214 
0.179 
9.106 
0.107 
2.963 
4.393 
0.179 
8.927 
8.82 
11.89 
13.32 
9.106 
8.927 
52 
66 
58.7 
GO.357 
3.643 
4.75 
0.537 
4.823 
0.18 
3.106 
4.213 
L 0.537 
5.36 
5.18 
8.466 
9.573 
4.823 
5.36 
50 
6’6 
57.5 
0.57 
3.106 
4.93 
0.57 
6.966 
0. 
2.536 
4.36 
0.57 
7.536 
7.536 
10.072 
1.896 
6.966 
7.536 
46 
68 
58 
0.75 
3.786 
5.214 
1.18 
7.07 
0.43 
2.606 
4.034 
1.18 
8.25 
7.82 
10.856 
12.284 
7.07 
8.25 
50 
65 
58 
0.536 
4.252 
5.466 
2.429 
4.964 
1.893 
1.823 
3.037 
2.429 
7.393 
5.5 
9-216 
10.43 
4.964 
7.393 
40 
70 
57 
0.18 
3.716 
6.11 
2.18 
3.856 
2. 
1.536 
3.93 
2.18 
6.036 
4.036 
7.572 
9.966 
3.S56| 
6.036 
50 
69 
58.5 
L 1.036 
4.034 
5.607 
1.464 
4.216 
2.5 
2.57 
4.143 
1.464 
5.68 
3.18 
8.25 
9-823 
4.216 
1 
5.68 
48 
70 
58 
their comparison each day at noon ; being wholly unconnected with the respective corrections to Mean Greenwich time, to which no 
and in one view, tire means whereby their absolute as well as relative uniformity and steadiness of going may be estimated, 
to two or three (where several are concerned) , in the intervals between comparisons with known time, and as each change has an influence 
amount of such corrections accordingly. 
