I. — Astronomic Observations. 



Oh the retuii 



1 : 



Kichiomi.— Obs. No. 100 \ = 2M™ 26^-0 E.G. 



„ „ 101 „ 25-9 „ 



Mean \ = 2'» 4™ 26^-0 „ 



Here also the agreement between the two results is satisfactory, and for 

 the reasons already stated we retain as definite value the mean of the two 

 results, as under : 



Kiohiomi \ = 2" 4'" 26"- 7. 



An analogous process is taken for Muyongo, where the latitude 

 0=0° 30' 41" N. was obtained hy two circummeridians (Obs. Nos. 12 

 and 13) observed on going; introducing this value in the calculation of the 

 longitude, for which there are two series of altitudes on going and two on 

 returning, we get : 



Going : 



Misongo.— Obs. No. 14 \ = 2^^ 3™ 56^-5 E.G. 



15 „= 55-8 „ 



Returning : 



Misongo.— Obs. No. 97 \ = 2'^ 3"' 55"- 4 E.G. 



98 „= 54-6 „ 



or taking the simple mean : 



Misongo A = 2'' 3'" 55^6 E.G. 



Thus we get a third test regarding the practical value of the daily 

 corrections adopted for the chronometer. 



And since the results of longitude were repeatedly concordant in a measure 

 greater than had been expected, we may proceed to the calculation of the 

 elements of position for all the other points determined during the expedition, 

 being confident of incurring no serious errors. 



Bujongo (near Lake Isolt). — The latitude was obtained Ijy a meridian 

 altitude observed on the outward journey (Obs. No. 1), and the longitude 

 by two series of altitudes also on going (Obs. Nos. 2 and 3) : 



19th May = 25' 44" N ..\ = 2'^ 4™ 53- 4 E.G. 



= 27 54-5 



Bujongo = 0° 25' 44" N X = 2"7'"53-9 „ 



(Lake Isolt) ,, = 31° 58' 28" „ 



319 



