II.— GEODETK^ OBSERVATIONS. 



By p. CA.MPIGLI. 



Taking as starting point a site near Bujongolo, the height of which above 

 sea-level was known from barometric readings, at that point, which for 

 shortness will henceforth be simply called Bujongolo, was constructed an 

 astronomic station, the latitude of which was determined by meridian and 

 cireummeridian zenithal observations of the sun, and the longitude by means 

 of lunar occultations of stars. 



Then in the neighliourhood of Bujongolo a base was chosen and measured 

 between the points A and />' {sec the annexed diagram of the triangulation.) 



The distance was obtained either directly by fixing stations with the 

 tachometer at the two extremes J and B, or by measuring with the metric 



353 ^ A 



