APPENDIX L.—ASTRONOMICAL OBSERVATIONS. 
14 
ASTRONOMICAL OBSERVATIONS—Continued. 
Observations for the variation of the compass, April 28, 1854.- 
Double altitude'of Polaris, in the west. 
Magnetic bearing. 
Variation of compass, E. 10° 19' 40". 
Double altitude of fpica Virginis, in the east. 
Time. 
Altitude. 
Magnetic bearing. 
h. m. s. 
d. m. s. 
d. m. s. 
8 00 45 
76 24 40 
. 47 30 00 E. 
Note. —Continuous rain from the night of the 29th of April 
to the morning of the 6th of May, 1854. 
CAMP ON THE WATERS OF THE TRINITY. 
DETERMINATION OF LONGITUDE BV LUNAR DISTANCES. 
' Determination of time, May 6, 1854 .—Double altitudes of the 
Sun’s upper limb. 
Time, p. m. 
2 17 
2 19 
2 22 
2 23 
2 23 
2 24 
2 24 
2 25 
2 25 
2 26 
2 27 
2 27 
d. m. s. 
85 44 55 
84 44 55 
83 42 55 
83 2L 45 
83 09 55 
82 55 25 
82 43 15 
82 27 45 
82 13 35 
82 00 25 
81 45 25 
81 33 25 
Thermometer 78° Fahrenheit. 
Time, p. i 
2 33 08 
2 34 50 
2 36 04 
Lost. 
Angular distances. 
107 27 25 
107 28 15 
107 29 05 
Clouds. 
Deduced longitude, 
(in arc.) 
Double altitude of the Moon’s bright {upper) limb, in the east. 
2 45 44 
69 57 15 
Double altitude of the Sun’s upper limb, in the west. 
73 18 25 
Time, p. m. 
2 48 59 
2 50 10 
2 51 41 
2 53 04 
Angular distances. 
107 33 55 
107 34 25 
107 34 55 
107 35 25 
Deduced longitude. 
Double altitude of the Sun’s upper limb, in the west. 
70 19 25 
Double altitude of the Moon’s bright {upper) limb, in the east. 
2 57 41 
74 46 15 
