\ 



t 



Ex. Doc. No. 41. 



f 



APPENDIX No. 5— Continued 



Jtdy 19j 1846. — Camp 20, Jackson Grove^ Arkansas 



DETERMINATION OF TIME. 



Time • 



Double altitude of the sun's 



upper limb. 



Chronometer fast 



■rr-^ 





h. m. s. 



10 34 23.6 



10 34 50.2 



10 35 15.8 



10 35 42.0 



10 36 07.0 



10 36 32.3 



10 36 57.0 



10 37 23.8 



10 37 48.0 



10 38 14.2' 



10 38 39.7 



10 39 04.8 



10 39 30.3 



10 39 54.7 



10 40 21.8 



10 40 47.8 



Veg. min 



89 

 89 

 89 

 89 

 83 

 88 

 88 

 88 

 88 . 

 88 

 •87 

 87 

 87 

 87 

 87 

 87 



30 

 20 

 10 

 00 

 50 

 40 

 30 



20 

 10 



00 

 50 

 40 

 30 

 20 

 10 

 00 



'^9.7 



h. in. s. 



7 11 38.2 



7 11 39.3 



7 11 39.4 



7 11 40.1 



7 11 39.7 



7 11 39.5 



7 11 



7 11 40.1 



7 11 38.7 



"7 11 39.4 



7 11 39.5 



7 11. 39.2 



7 11 39.3 



7 11 38.3 



7 11 39.8 



7 11 40.5 



213 



Thermometer S3''. 



^ _ 



Mean of 16 observations; Ik. 11m. 39.365 



*i: 



DETEKMINATION OF INDEX ERROU. 



I 



On the arc 



Off the arc 



Index error — -f 10". 



Min. sec 

 31 20 

 31 40 



\ 



^^ 



