VARIATION of the MAGNETIC NEEDLE at Sea, with BARLOW’S PLATE attaclied to the COMPASS.
1827.
Jan.
April.
Latitude.
North.
16 12
16 18
16 22
16 33
17 50
18 56
19 14
19 52
32
18 38
19 II
19 02
18 55
18 59
18
19 04
18 .53
18 55
18 58
18 50
18 51
18 59
19 38
19 37
19 35
19 16
19 33
19
19 26
19 38
20 30
20 42
20 57
20 58
21 23
21 23
21 25
21 29
Longitude.
M'est.
134 IS
135 26
137 18
143 43
147 02
149 25
150 17
152 01
160 34
163 44
169 07
172 52
175 14
177 02
178 27
183 57
186 52
189 55
192 45
195 35
198 04
200 10
202 51
204 45
206 36
210 48
211 36
214 21
214 32
214 43
216 41
219 41
221 45
223 24
224 02
226 30
229 .54
232 00
235 57
235 57
237 18
238 44
Variation,
East.
8 51 55
8 28 20
8 15 10
6 21 20
6 34 10
7 12 35
9 49 20
8 19 00
10 01 50
12 16 20
1! 59 05
12 31 10
14 29 50
13 32 50
13 08 20
12 42 15
12 13 20
12 02 00
12 02 15
13 37 06
10 21 00
10 34 30
9 20 45
9 38 40
8 34 15
8 39 04
7 21 35
7 22 25
6 34 00
5 33 25
5 42 35
2 44 50
2 25 45
3 20 55
1 24 10
2 48 55
0 46 20
0 13 00
1 43 20
YVest.
0 14 30
0 25 00
East.
0 27 00
0 20 20
West.
1 03 10
0 25 20
West.
0 23 30
0 7 08
0 14 30
1 15 4.5
East.
0 15 05
0 14 40
West.
0 07 38
1827.
April
May.
Latitude.
North.
21 36
18 29
17 18
17 24
17 20
17 39
18 11
20 38
20 20
20 55
21 53
22 03
22 56
22 49
22 56
25 42
25 58
Off Loo
20 12
26 02
26 02
26 12
26 12
25 31
26 07
26 25
26 30
27 14
26 54
26 49
26 49
27 48
27 30
27 21
27 09
01
26 56
27 27
28 22
28 37
28 48
29 25
29 40
30 00
32 17
Longitude.
YVest.
238 44
242 56
240 59
240 21
240 07
238 55
238 40
238 37
236 05
235 08
231 44
231 17
Choo. ,
231 53
231 35
231 01
230 40
229 41
224 30
234 30
222 58
221 34
221 00
220 57
217 59
217 59
218 03
218 03
03
218 00
216 40
218 11
224 30
223 20
222 30
210 48
106 30
Variation.
East.
East.
1 07 15
2 47 30
1 19 20
2 59 00
3 26 05
2 19 45
1 38 00
2 07 17
0 42 35
0 16 30
1 50 40
1 09 10
YVest.
0 59 05
0 56 15
1 58 40
1 01 35
East.
0 30 10
1 31 30
1 09 30
1 01 30
1 38 30
1 17 55
2 21 00
1 33 20
1 21 20
0 55 55
2 03 20
0 56 55
1 00 50
1 28 30
1 40 30
1 23 40
YVest.
0 17 40
East.
0 22 20
1 54 25
1 34 00
0 15 00
0 45 30
1 42 00
3 08 25
2 37 00
2 35 05
3 23 30
2 57 45
2 43 48
4 09 30
3 51 00
3 34 45
3 51 00
4 43 10
4 21 20
5 01 00
3 54 50
1827.
June.
July.
Aug.
1828.
Jan.
Latitude.
North.
34 15
36 08
38 00
39 56
40 52
41 48
52 00
61 08
61 06
66 43
66 35
66 30
66 13
67 02
69 08
68 15
67 46
69 49
68 15
67 26
67 28
67 23
67 17
66 38
57 32
57 36
50 45
40 55
39 34
36 03
33 40
31 53
29 26
37 12
25 47
25 15
25 54
23 18
22 11
22 01
21 37
21 36
21 33
21 32
21 25
Longitude.
YVest.
206 30
205 36
204 29
203 12
202 18
201 45
201 21
183 30
183 27
166 25
163 37
163 50
166 2o
167 58
166 48
Off Cape
Krusenstern.
164 10
Off St.
Paul’s Isl.
159 35
138 32
132 00
130 09
123 10
122 11
120 51
119 06
117 55
117 29
114 16
110 28
110 04
107 10
107 00
106 39
106 29
Variation.
East.
5 28 45
4 00 30
5 35 10
5 05 30
6 00 00
6 14 40
5 06 20
15 34 00
15 38 04
25 44 00
23 01 00
23 03 00
33 51 30
32 41 00
29 08 00
31 12 36
29 44 31
31 31 43
31 10 09
29 00 45
30 29 25
28 03 40
31 38 30
28 22 50
31 37 14
29 30 30
28 34 20
30 48 55
29 45 40
29 16 16
29 48 50
28 58 45
28 34 45
19 58 50
19 15 20
19 38 45
18 43 00
17 58 50
16 51 30
14 06 20
12 00 10
11 18 40
10 25 5
10 17 35
9 45 45
8 00 30
10 47 20
9 37 10
10 24 15
9 23 40
9 24 65
7 59 15
10 28 00
10 40 00
10 01 00
’ 54 40
VARl.VriON of the MAGNETIC NEEDLE a t Sea, with BARLOW’S PLATE attached te the COMPASS.
Date. Latitude.
North.
Longitude.
West.
Variation.
East.
Date. I>atitudc.
North.
Longitude.
YVest.
Variation.
East.
Date. Latitude.
North.
Longitude.
YY'est.
Variation,
i East.
1828. 0 0 0 J828. 0 0 0 1828. 0 0 «
21 34 105 29 9 10 10 F e b . 22 54 106 10 10 09 05 M a rc h . 16 45 101 00 10 29 45
21 27 106 17 8 30 00 22 50 106 12 8 27 30 — 14 29 99 08 7 47 20
9 00 00 _ 22 50 106 15 10 15 35 — 14 22 99 00 8 10 15
21 27 106 *10 8 14 00 _ 22 06 105 53 8 21 20 — 14 13 98 54 9 09 20 _ 21 48 105 51 10 13 00 M a rd i , 21 15 105 25 10 47 10 — 13 46 98 56 9 03 45
10 16 00 _ 20 50 105 40 7 58 15 .— 12 38 98 .59 9 08 35
21 49 106 01 7 .51 00 _ 20 17 105 40 8 12 00 — 8 20 98 45 8 29
_ 22 02 106 00 8 37 45. _ 19 53 105 34 7 08 30 — 5 56 98 11 « 13 50 _ 22 12 105 55 10 24 00 — 18 29 104 16 8 57 40 — 4 39 97 3/ 11 8 35 00
F e b . 22 40 105 60 8 13 00 _ 18 17 104 00 9 48 55 — 3 18 97 22 8 54 15
40 105 58 8 48 15 _ 18 12 103 30 10 03 00 — 0 34 99 22 8 25 10
— 22 43 106 05 8 45 20
V A R IA T IO N o fth e COMPASS observed on shore.
1825.
July.
1828.
May.
1825.
Dec.
1826.
Jan.
April.
Place. Variation
E.
Rio Janeiro . ^
2 51 00
3 30 45
■ Mean 3 10 52
Conception
chm . . “j
2 10 06
2 27 42
16 37 12
16 38 00
17 12 00
Mean 16 49 4
do. do.
do.
18 17 46
16 52 35
Valparaiso .
15 18 25
15 55 00
15 34 UO
16 44 00
Mean 15 52 51
Coquimbo 14 24 00
Pitcairn Island ^ 5 57 35
6 02 10
Mean 5 59 52
Gambier Islands
Otaheite
7 08 00
7 33 25
Instiument
used.
No. 1.
No. 2.
Gilbert.
No. 1.
1.
Gilbert.
No. 1.
No. 1.
No. 1.
Theod.
Theod.
1826.
May.
1827.
Feb.
July.
Petropatilski
At anchor in the
Bay Good Hope
do.
do.
9 38 00 No. )
9 49 0
9 41 0 No. 2
9 18 00
11 10 00 No. 1
11 10 10
10 58 10
11 00 00
10 48 10
10 35 00 N^.2
10 37 00
10 25 52
10 40 37
10 33 31
4 48 25
4 35 42
3 43 00
4 26 00
3 23 00
4 31 00
4 48 00
4 30 00
4 07 00
4 13 18
4 57 31
30 05 00
29 13 00
29 06 00
Instrument
used.
No. 2.
Theod.
Theod.
Gilbert.
- I T T