In this note are contained the relations 

 and calculations of the astronomic, 

 meteorological and geodetic observations 

 which H.K.H. the Duke of the Aljruzzi 

 was able to carry out on the route from 

 Entebbe to Bujongolo, and duiing the 

 exploration of the Riiwenzori liange. 



The calculations relating to these 

 observations, as well as the construction 

 and plan of the topographic maps 

 accompanying the present volume were 

 executed at the Hydrographic Institute 

 of the Koyal Navy at Genoa. 



The way hy which the astronomic 

 and meteorological ol)servations were made, from which were olitained the 

 positions and altitudes of the various points indicated on the maps, as well as 

 the methods of calculation employed, are all eml)odied in the accompanying 

 special reports drawn up through the care of the Director of the said Institute, 

 Mattia Giavotto, Captain of frigate, the sections dealing with the meteorology 

 and the astronomic observations being prepared by Prof. Omodei and the 

 " Capo-Tecnico " 8ig. P. Campigli respectively. 



305 



