ISO 



Ex. Doc. No. 41. 



APPENDIX No. 5. 



rt 



ASTRONOMICAL OBSERVATIONS. 



9 



j^oTE. — The lunar distances were reduced by Professor Hubbard, 

 1)Y Bessel's method, which is presumed to be the most accurate 

 method known. The important changes made in the longitude oi 

 one or two leading positions, must, therefore, depend for authen- 

 tication upon the observations themselves. ' • • j 



These observations have not, in all cases, been multiplied to the 

 extent desired, owing to the nature of the service on which the un- 

 dersigned was employed; but there is no reason on the face of them 

 for doubtine the results deduced. ' ,^^^r 



^ W. H. EMORY. 





June 21, 1846. — Fort Leavenworth 



Time, p. m. 



S. 



k, on. 



4 01 46.5 



4 04 52 



4 06 15.2 



4 07 30.0 



4 08 27.1 



4 09 56.7 



4 11 18.5 



4 12 46.2 



4 13 57.3 



4 -15 59 



DETERMINATION OF TIME 



Double altitudes of a Lyrse 



in the east. 



1 



^■'■h 



L-> 



Deg: min. sec 

 102 00 20 



35 



103 09 



103 40 30 



104 08 20 



104 29 36 



105 02 30 



105 33 30 



106 07 20 



106 53 35 



107 18 40 



'V 



Thermometer 60' 



ChroBometer fast 



h. m. s. 



6 53 14.9 



6 53 14.8 



6 53 15.4 



6 53 15.7 



6 53 16.0 



6 53 17.6 



6 53 16.6 



6 53 14.1 



6 53 15.0. 



6 53 16.7 



