« 



¥" 



296 



/ 



Ex. Doc. No. 41. 



APPENDIX No. 5— Continued. 



October 10, 1816.— Camp 70. 



*^ 



DETERMINATION OF TIME. 



k f 



Equal altitudes of sun. 



Time, a. m. — Oct. 



11. 



k. m. s. 



4 57 49.3 



4 57 18.2 



4 56 45.0 



4 56 12.5 



4 55 41.5 



4 55 09 . 2 



4 54 37.3 



4 54 04.7 



4 53 33.5 



4 53 01.0 



4 52 28.8 



4 51 25.3 



- ■ 



J 





Double altitudes of 

 sun's upper limb. 



Deg 

 74 



00 



73 50 



40 

 30 



73 

 73 



73 20 



•,73 10 . 



73 00 



72 50 



72 40 



72 30 



72 20 



72 00 



Time, p. m. — Oct 



10. 



i 



4 



h. ni. s. 



9 52 44.5 



9 53 16.0 



9 53 49.0 



9 54 20.8 



• 9 54 61.0 



9 55 25.5 



9 55 56.0 



•9 56 .26.3 



9 56 59.0 



9 57 30.0^ 



9 58 01.2 



9 59 01.5 



Chronometer fast. 



7 



7 



^7 



Mean of 12 observatibns/7A. 37m. 37. 99^ 



h. m. s. 

 7 37 37.67 



37 38 . 07 



7 37 38 . 16 



38.00 



7 37 37 . 79 



7 37 38.07 



7 37 38 . 55 



7 37 37.59 



7 37 38.50 



7 37 37.90 



7 37 37.63 



7 37 37.87 



«^ 



DETERMINATION OF INDEX ERROR. 



Min.sec 



On the arc 31 30 



Off the arc ''[. 31 50 



I 



Ind 



ex error 



+ 10" 



% 



/ 



f 



f 



