Sa. " pws) 
¥ BSCAMPMENT Ones, DRT BANK GF PLATTE RIVER. 
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Retest % times. Seplember 20, 1542—allilude of Arelurus. 
OBSERVATIONS. ‘ : 
Double altitude of Arc‘urus. “* Time of chronometer. 
pe De min So tees 0 ae ae he min. set. | ott 
‘ 48 29 50, 9.1 ae 
es "Index error = — | min. 32 sec. . . 
pittaintion of latitude, Septer mber 20; 1842—allitude wp Polaris. 
i 
ee 
s ——— 
eee eee eee see eS Oe Eee es a8, Pim 
Doyble altitude of Polaris. — _ Time of chronometer. - 
— shutinsiat ip ‘ i raeezageis i eee 
- mine sec. \—— Ae tain. - Se. — 
88 05 (10 a. oe a ee 
/ = 8s 08 | 20 , ‘| 9 Mee arp 
et 27 1651-45 -« AY is S°Peet 276i? 
<0 17.) Be : e338 
’ 82 *20 40 . ‘ 7 ) FF 
pba a : “G3 wt cree tskS 
"Thermometer _s 
’ RESULT oF CALCULATION. — 
wivett ins amma sort 
chat ot = ver me foam = ee oe 
fy i ae sata pal en Sia wi is ay oe 
