LATITUDE OF THE LICK OBSERVATORY. 123 



derived from the triangulation measures of Professor Da- 

 vidson. 



These are (for the dome of the 12-inch equatorial) : 



Latitude = -f 37^ 20' 24''.752. 

 Longitude = + 121° 38' 35''. 284 (Greenwich). 

 Longitude = 8 h. 6m. 34.352 (Greenwich). 

 Longitude = 2 h. 58 m. 22.26 (Washington). 



It will be observed that our determination of the latitude 

 gives a result, 0".4 greater than that of the U. S. Coast Sur- 

 vey. This corresponds to about forty feet, six inches. The 

 agreement between the two results is perfectly satisfactory, 

 when we consider the small number of stars observed by us, 

 and also that the position derived by the U. S. Coast and 

 Geodetic Survey is not strictlj^ definitive, as two stations 

 (viz., Macho and Sta. Ana) require to be occupied to com- 

 plete the primary triangulation in this vicinity. 



