APPENDIX. 
389 
XVI. 
METEOROLOGICAL OBSERVATIONS 
MADE 
ON BOARD THE UNITED STATES' SHIP VINCENNES, 
UNDER THE EQUATOR. 
November 6th, 1838. 
Mean Barometer, 
Highest at 11 p.m. 
Lowest at 3 p. m. 
Mean Sympiesometer, - 
Highest at 11 p. m. 
Lowest at 4 p. m. 
Mean temperature of air, 
Mean temperature of water, 
29-99 
30-04 
29-94 
29-68 
29-74 
29-62 
75-37° 
76-10° 
November 7th. 
BAROMETER. 
SYMPIESOMETER. 
HOUR. 
REMARKS. 
P. M. 
A. M. 
P. M. 
A. 31. 
1 
29-98 
29-98 
29-66 
29-68 
Mean Barometer, - - 
30-00 
2 
29*98 
29-98 
29-66 
29-67 
Highest at 9 a. m. 
30-05 
3 
29-96 
29-98 
29-63 
29-68 
Lowest at 3 p. m. - - 
29-96 
4 
29-97 
29-98 
26-63 
29-68 
5 
29-97 
30-01 
29-64 
29-70 
Mean Sympiesometer, 
29-68 
6 
29-98 
30-02 
29-65 
29-72 
Highest at 8 a. m. 
29-74 
7 
30-00 
30-02 
29-68 
29-70 
Lowest at 4 p. m. 
29-68 
8 
30-02 
30-03 
29-68 
29-74 
9 
30-03 
30-05 
29-70 
29-72 
Mean Temp, of air, - 
76-20° 
10 
30-04 
30-02 
29-72 
29-69 
Mean Temp, of water, 
7618° 
11 
30-04 
30-00 
29-72 
29-68 
12 
29-98 
29-99 
29-68 
29-66 
i>8 
