Por longitude Observation of Chihuahua I tr *^ our observations 

 of the eclipses of the satellites of Jupiter, but was only once 

 favored, to make a reasonably good Observation» On Deceraber 30, 

 1846 I observed the eclipses of the satellites of Jupiter wlth a 

 lar^e telescope as follows: 



Immersion at 9 14* 35* A 12 46 



o \ tt 11 



Emersion 12 27 45 H 12 46 



The emersion may have been observed a little too late, but is neve 

 theless raore accurate than the Immersion. As to time I raust refer 



to the above time determinations. Düring that night it was much 



too windy to make an instantenuous time determination. 



Observations of the altitüde of the sun for the deterraination 

 of the latitude of Cusihuiriachi ( near Chihuahua, E.D.) 

 Ist Observation Jan, 6 t 1847 double altitüde of 



SSE rim 



of Sun at noom 

 70° 17 f 



2nd w " 7 t*' 79 3^ f 



3rd " 2 12. " 80* 59 1 



These 3 observations result in a latitude of 28* 11* 21, 0 H * 



28° 9 50,9 



W° 31 1 79,5 ** 

 3/ 28* 10 26,5 this 



is therefor the average of the observations for the 

 latitude of Cusihuiriachi. 



(1) probably the 4 largest ones known then of 14 known today. 



E.B. 



* Use of a coma is normal in German, whereas in Englis£ the 

 com is replaced by a point. (E.D.) 



X* Hott*. ofifi^oK s^onn/s V^,** ,oW\ou^y \\At*c(tdC (E.D.) 



(translated from German handwriting by Edgar Denison 

 St. Louis, Mo. November 1987) 



