/ 



Ex. Doc. No. 41. 



APPENDIX Ko. 5— Continued 



221 



July 30, 1846.— Ca/n^J 30, near Benth Fort. 



DETERMINATION OF TIME. 



. t 



Time, a. in 



h. m. s. 



A 23 02.3 



4 23 29.7 



4 23 55.0 



4 24 20.2 



4 24 47.3 



4 ^25 38.8 



4 26 03.2 



4 26 56.5 



4 30 02.0 



4 30 51.8 



4 31 18.8 



4 31 44.0 



4 35 10.0 



4 



32 



37.0 



4 33 02.8 

 4 33 28.8 



T 



Double altitudes of 

 sun's upper limb. 



I)e.£^. min 



90 00 



90 10 



90 20 



90 30 



90 40 



91 00 

 91 10 



91 30 



92 40 



93 00 

 93 10 

 93 20 

 93 30 

 93 40 



93 50 



94 00 



Tinie, p. in. 



h. m. s. ' 



10 40 02.5 



10 39 36.0 



10 39 10.0 



10 38 44.2 



10 38 17.5 



10 37 26.0 



10 37 00.0 



10 36 08.0 



10 33 06.0 



10 32 14.0 



10 31 47.7 



10 31 22.3 



10 30 57.4 



10 .30 £9.5 



10 30 04.2 



10 29 37.5 





Chronometer fast. 



h. m. • s. 

 7 25 30 . 06 

 7 25 30.52 

 7 25 30.18 

 25 29.80 

 25 30.10 



25 



''0.11 



7 

 7 

 7 



7 25 29.42 



7 25 29.98 



7 25 31.76 



7 25 30.67 



7 25 31.03 



7 25 30.94 



7 25 31.60 



7 25 31.06 



7 25 31.32 



7 25 30.99 



\ 



Thermometer 78^. 



Mean of 16 observationsj 7A. 25m, 30. 59^ 



( 



PETEHMINATiON" OF INDEX ERROR. 



On the arc 

 Off the arc 



Min. sec 



31 30 



31 30 



Index error 



00\ 



i 





i 



