734 
APPENDIX. 
OBSERVATIONS WITH THE HORIZONTAL NEEDLE. 
Date. 
May, 1825. 
Aug. 1826. 
July, 
July, 
Nov. 
Feb. ] 
April, 
May, 
Oct. 1825. 
Apr. 1826. 
Feb. 
Dec. 1825. 
July, 
July, 
Dec. 
Place. 
Latitude. 
Longitude. 
Tempe- 
rature. 
Mean Time 
, 100 Vib. 
Ratio Force. 
Observed. 
Computed. 
Observed. 
Computed, 
s. 
s. 
Portsmouth, 
50 
47n 
1 
06w 
56 
497.5 
, • 
1.00 
J.OO 
N.W. Coast of America, 
70 
31 
160 
30 
67 
682.1 
693.4 
1.1565 
1.1190 
Chamisso Island, . 
66 
11 
161 
46 
57 
600.12 
600.10 
1.0866 
1.0868 
Petropaulski *, 
53 
01 
201 
16 
49 
456.4 
455.06 
.9178 
.9234 
San Francisco, 
37 
48 
122 
23 
67 
422.67 
444.7 
.9986 
.9860 
Woahoo, . ■ . 
21 
18 
158 
00 
80 
390.36 
396.25 
.7233 
.7014 
Macao, 
22 
09 
246 
28 
77 
373.3 
387.73 
.6934 
.6426 
Loo Choo, 
26 
12 
232 
18 
71 
376.6 
391.47 
.7208 
.6783 
Talcahuana, . 
36 
42 s 
73 
00 
61 
367.3 
Otaheitc, 
17 
30 
149 
32 
81 
357.0 
. < . 
. . . 
Bow Island, . 
18 
06 
140 
51 
83 
354.4 
© c 
fi ^ 
Pitcairn Island, . 
25 
04 
130 
08 
75 
354.1 
. 
. . 
Rio Janeiro t, • 
22 
54 
43 
05 
72 
371.9 
.6248 
.5934 
After 
the 
Nee 
die 
was 
remag 
netised. 
Chamisso Island, . 
66 
12n 
161 
46w 
56 
594. 
Standard. 
1.0862 
1.0868 
Petropaulski, 
53 
01 
201 
16 
40 
440.4 
450.36 
.96522 
.9234 
San Francisco, 
37 
48 
122 
23 
53 
422.9 
440.18 
.9954 
.9860 
Coquimbo, . 
29 
57 
71 
17 
64 
369.8 
387.12 
.7302 
.6669 
• Observed by Mr. Wolfe (mid.). 
t Assuming the Dip to be 14° 23' 6'' S., according to Captain King’s observations. 
