xl Astronomical and Meteorological Records^ SsPc. 



Aug. 6^ 18£0. 



Camp or^he Canadian River of August 6th 



Meridian altitude of sun's 

 lower limb - - - 



Extent of natural horizon, or 

 sheet of water - - 5 



Hei<rht of observer's eye above > 

 horizon - " " 5 



Index error of sextant 



Latitude deduced 



Auff. 22, 1820. 



Camp on the Canadian River of Jiugiist ^Qd. 



Meridian double altitude of } 

 moon's lower limb 



Index error — 4' 00". Latitude 

 deduced . . - 



72" 18' 15" 



35 26 29 N. 



Camp on the Canadian River of August 51st. 

 Equal altitudes of Stm to find error of watch, at noon. 



Time from Noon, 

 A. M. 



Aug. 31, 1820. 



3h 27' 43" 



3 26 21 



3 24 55 



'r™^!:T.^°°"' I Error of Watch. 



P. M 



9.^ 23 

 2 22 

 2 20 



' 40" ^ 



\\ '\^' 59X" 



18 >\ ^ 



, ^_ r Mean tin 



slow, 

 time. 



Altitudes of Sun and times correspondent, to find the Latitude. 



Au£. 31, 1820. 



Latitude of Camp deduced from the above 



Index error. 



— 4' 



Error and varia- 

 tion of watch to 

 be allowed. 



Lat. by account 

 34'=' 57' N. 



34° 57' 55" 



A mean of seven Lunar distances, and times correspondent — near- 

 est limbs of Sun and Moon. 



iTime per Watch, 

 A. M. 



7" 32' 06" 



Distiuice of Sun 

 and Moon. 



50' 15' 



Index error. 



4' 



Aug. 31, 1820. 



Allowance to be made for error and variation of watch. Longitude 

 by account, 6" 26' W. 



Longitude deduced, 6" 26' 12", or 96° 33' 00" W. of Greenwich. 



