Ex. Doc. No. 41. 



275 



APPENDIX No. 5~Continued. 



Sefiemler 13, 1846.— *San^a Fe 



Time, a. m 



h. m. s. 



4 31 12.0 



4 31 39.8 



4 32 07.5 



4 32 35.8 



4 33 02.3 



4 33 32 . 



4 34 00.2 



4 34 27.2 



4 34 54.8 



4 35 22.7 



4 35 51.1 



4 36 19.0 



4 36 46.5 



DETERMINATION OF TIME. 



Double altitudes of sun's 



upper limb. 



d 





min . 



.sec. 



30 



00 



40 



00 • 



50 



00 



CO 



00 



10 



00 



20 



30 



00 



00 



Deg. 

 76 

 76 

 76 

 77 

 77 

 77 

 77 

 77 40 00 



77 50 00 



78 00 00 

 78 10 00 

 78 20 00 

 78 30 00 





Thermometer 59°. 



Chronometer fast^ 



k. m. s. 



7 33 54.2 



7 33 54.4 



7 33 54.3 



7 33 54.9 



7 33 53.6 



7 33 55.5 



7 Sa 55.9 



7 33 55.0 



7 33 54.7 



7 33 55.7 



7 33 55.1 



7 33 55 . 1 



7 33 54.6 



Mean of 13 observations, 7A. 33m. 54. 78* 



\ 



On the arc 

 Off the arc 



DETERMINATION OF INDEX ERROR 



MiTif. sec 

 31 20 

 31 50 



Min. sec 

 31 40 

 31 50 



Index error = + 10'\ 



y 



I 



