‘op iene ie ha a i Rn ie kee | See nlae Sao Mp Hig RE wn 
“Hi, at rhs ns Bis 2 
[ 174] 442 
MISSION ARY STATION AT THE DALLES OF THE COLUMBIA. 
Determination of longitude, November 5, 1843—altitudes of « Lyra. 
OBSERVATIONS, 
r 
FIRST SERIES. : | : SECOND SERIES. 
Double altitudes of | Time of chronometer. Double altitudes of | Time of chronwaneten. 
: a 3 = a Lyray 
Deg. min. sec. h. min . Deg. min. sec h. min. see. 
1% = 6-38. 40 9 40 35.5 wi 10a Ge 45 
m2 19 00 41 324 70 450 (20 46 058 
oO. 42 27.0 70 22 45 47 28h 
71 643 ©=©«650 43 =. 21.0 70 40 
wh Ree AO 44 10.0 69 45 40 49 2h. 
u 
Index error = ++ | min. 22 sec. is 
RESULT OF CALCULATION. 
Mean time. Advance. Longitude. 
* 
he min. sec. hem sec. 
8 34 59 1 09 53.3 
‘ me or 
= 2 : 
ast 
2 
- : 
