Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean: Vol. 2, Pt. 4

APPENDIX L.-ASTRONOMICAL OBSERVATIONS.
ASTRONOMICAL OBSERVATIONS-Continued.
Determination of time, April 5, 1854.-Double altitudes of Si- Time. Angular distances.
rius, in the west.
h. m. s. d. M. s.
Time. Altitudes. 5 d
7 37 55 43 50 50
7 39 27 43 51 20
-. m. 5. 5.7 40 40 43 52 10
h. m. s. d. m. s.
7 41 29 43 53 00
6 38 20 73 31 50
6 39 22 73 19 40
6 40 31 73 07 10
6 41 31 72 55 20
6 42 32 72 44 20 Double altitude of Aldebaran, in the west.
6 43 23 72 33 40
6 44 17 72 23 20 Time. Altitude.
6 45 20 72 11 10 Time.
Double ~~~~~~~~~~~~~~~~~~~~~AltitudesoArtrsintees.h. m S.d m..
h. M. s.
7 43 55
Altitudes.
Double altitude of the Moon's bright (lower) limb, in the west.
d. m. $.
88 33 00
88 06 20
88 27 40
89 48 50
90 11 50
90 33 10
90 53 40
91 10 40
9 t9 32 10
91 50 40
Time. Altitude.
h. m. s. d. m. s.
7 46 20 133 15 50
Time. Angular distances.
h. m. s. d. m. s.
7 48 28 43 54 40
7 49 33 43 55 00
7 50 25 43 55 30
7 51 25 43 55 50
Thermometer 46,o~ Fahrenheit.
The Moon's western limb and Spica Virginis, east.
Timue. Angular distances.
h. m. s. d. m. s.
9 49 58 90 24 50
9 51 18 90 23 50
9 52 25 90 23 20
9 53 25 90 22 50
Thermometer 46JO Fahrenheit.
Determination of longitude, April 5, 1854.-The Moon's west ern limb and Aldebaran, west.
Time.
h. m. S.
7 28 08
7 29 26
7 31 03
7 32 00
Angular distances.
d. m. S.
43 48 20
43 48 50
43 49 20
43 49 50
Double altitude of the Moon's brighlt (lower) limb, in the west.
d. 3m. S.
138 16 10
Double altitude of the Moon's bright (lower) limb, in the west,
Time. Altitude.
Time. Altitude.
h... ds. d. m. s.
7 36 24 51 49 10
131
d. M. S.
48 41 00
Double altitude's of Arcturus, in the east'.
Time.
h. M. S.
9 22 36
9 23 51
9 24 40
9 25 33
9 26 26
9 27 15
9 2 07
9 28 46
9 29 38
9 30 22
Time.
Altitude.
h. M. S.
7 33 59
Double altitude of Aldebaran, in the west.
h. ri. S.
9. 55 38
d. - m. S.
80 06 00