Ex. Doc. No. 41. 



223 



APPENDIX No. 5— Continued. 



July 31, 1846. — Camp 30, near Benfs Fort. 



DETERMINATION OF LONGITUDE BY LUNAR DISTANCE. 



4 



Time, p. m. 



m. 



s. 



h. 



3 12 39.6 



3 16 04 . 



3 18 55.8 



3 21 04.0 



3 26 06.8 



3 2*8 11.8 



3 30 23.3 



a Aquilffij and moon*s 

 ■west limb. 



Beg 



mm. sec 



75 42 10 



75 41 30 



75 40 30 



75 39 30 



75 37 40 



75 37 00 



75 36 25 



i 



Double uhitude of moon's 



upper limb. 



Deg. min. sec 

 64 09 50 

 63 34 10 

 63 01 30 

 62 41 40 



61 



A 



8 20 



61 23 50 

 60 56 40 



I 



LongituJo. 



h. m. s. 



6 50 05 . 1 



6 48 45.1 



6 48 57.5 



6 49 55.9 



6 50 29.8 



6 50 29.8 



6 60 02.1 



* 



tt 



Thermometer 78^. 



Time, p. m. 



Spica Yirglnis, and 

 moon's \ve:=t limb. 



Moon's lower 



> 



limb. 



I 



<ongii*!de. 



r 



■_ 



h. in. s. 

 3 40 33.0 

 3 46 51.0 

 ^ 48 54.0 

 3 50 58.2 



F 



Deg. min. sec. 

 24 26 40 

 24 27 55 

 24 28 40 

 24 29 20 



Deg. min. 



57 46 

 56 49 

 56 01 

 55 33 



, sec. 

 50 

 10 

 40 

 40 



h. 

 6 

 6 

 6 

 6 



m. 

 55 

 55 



52 

 52 



s. 



13. 'I^ 



02.9 



19.2 



22.7 



Longitude by 7 observations of a Aquils . . 



U A U <;r»;r»a 



• ■ • 



4 



Spica 



A. m. s. 



6 49 49.33 

 6 53 44.12 



Mean.. .". 6 51 46.72 



^^ 



