146 APPENDIX L.— ASTRONOMICAL OBSERVATIONS, 
ASTRONOMICAL OBSERV ATIONS— Continued. 
Determination of — blan 24, eoe altitudes of 
Observations x the variation of the compass, oc 20, 1854.— | , 
, n the we 
Double altitudes of Polaris, in the west 
| 
| 
Time. Altitude. Magnetic bearing. | Time. Altitudes. Deduced latitudes. 
|| 
| 
kom. G8 E Uum Ux. d. m. s. || h. m d. d. m. s 
7-30. 90 63 40 10 N.11 50 00W. || 7 96 40 e3 45 40 
| 7 98 30 63 44 50 
U T3 .. —-0-49-80 
Variation of compass, E. 10° 30’. 7 92 45 | 63 43 10 
; EES 7 34 56 | 63 42 00 32 59 18.5 
Double altitude ef Spica Virginis, in the east. | 
7. 36::55 63 41 00 
Time, a. m. Altitude. Magnetic bearing. 7 2 5 | = es - 
7.43 11 | 63 33 00 
KH ES + 7 46 16 | 63 36 40 | 
|» 9t 8. n . . ^ e EA r - 7 9 27.6 4 
8.38 47 76 06 20 8.49 20 40E. SK as =o os E 
* BE 05 63 34 40 
Variation of compass, E. 109 30/ 50”. TUBELBE | = 33 40 
Thermometer 69° Fahrenheit. : e Ri | 63 zi : 
8 00 17 63 31 10 32 -59 23. 08 
AT CLEAR FORK OF THE BRAZOS—CROSSING OF THE 8 09 30 63 -30 <10 
R i 8 04 50 63 29 10 
8 07 19 63 20 1 
DETERMINATION OF LATITUDE. 8 09 55 63 27 90 í 
Approximate latitude to be used in first computation of time, a € m m 
939: 55/. 
Determination of time, April 24, 1854.— Double altitudes of Thermometer 55? Fahrenheit. 
.JProcy “a. in the west, 
CH e AO E-  Alitudes. ; Determination of t April 24, 1854. pie altitudes of 
pica. Virginis, in the east 
h. 2 d. m s. m 
7 14 31 86 43 20 2 error; Time Altitudes. Deduced latitudes. 
7 15 34 86 18 9D € repa 
7 17 37 85 32 30 
ri 18 37 | 85 10 50 X Gc d. d. m. s 
z 19 27 | 84 51 8 49 53 83 39:50 
zi 20 07 £4 36 10 | 8 .50 45 83 50 20 
7 20 5l 84 19 00 B 5l 98 84 00 10 
7 21 39 84 ot 0 8 52 07 84 0 
T 22 83 43 20 8 53 08 84 20 00 
WM 23 16 83 24 50 CONI 
8 63 54 84 29 10 
: 8 54 42 84 3 
Double altitudes of Arcturus, in the east. 8 55 22 84 46 50 
: 8 56 08 84 0 
i s 8 56 48 85 03 20 
Time. Altitudes. 8 57 97 85 11 10 33 00 47 
8 58 07 85 18 40 
$. d. m. s 8 58 48 85 00 
8 13 29 97 49 00 8 59. 36 85-8 
8 14 49 98 10 9 00 15 8 43 40 
8 15 32 98 40 10 9 58 BS" OL “40 
1. 16 19 99 00 00 9.01.36 85 58 00 33 00 45 
Nn yd 07 99 10 
8 55 99 39 00 po I7 86 06 00 
8 18 44 99 9 03 03 86 14 
vU 19 — 24 100 20 40 9 03 44 86 91 20 
S 20 13 100 40 9 04 93 86 23 10 
s Mu 01 100 57 20 9 05 86 33 00 44 
"Thermometer 55° Fahrenheit. Thermometer 559 Fahrenheit. 
