I 
Appendix B. 
The position of Ibanda, a place lying between Bujongolo and Fort Portal, 
was determined both on going and returning. From four meridian altitudes 
(Obs. Nos. 27, 65, 66, and 67), we obtained for this point the latitude 
0 = 0° 19' 59" N., and from this were deduced the following longitudinal 
values:— 
On the outward journey : 
Ibanda Obs. No. 28. A = 2 h 0 m 44 5, 0 E.G. 
5} 55 
On the return journey : 
Ibanda. —Obs. 
29. 
CO 
1! 
>5 
Mean 
„ = 2 U 0 m 43 -5 
55 
No. 62 
\ = 2 h 0 m 
43 s - 9 
, 63 
... 55 = 
41 • 5 
64 
... 55 = 
42 ■ 5 
, 68 
... 55 = 
42 • 7 
, 69 
... 55 = 
43 • 5 
Mean „ = 2 h 0 m 42 s - 8 
Such is the agreement between these two results that we may even 
disregard all considerations as to the weights to be adopted for the values 
•obtained, whether as regards the number of concurrent observations, or the 
length of time during which Greenwich time had to be conveyed. In this 
case there intervened 22 days for the determination of longitude on going 
(that is, Greenwich time was conveyed for 22 days), compared with a mean of 
about 5 days of conveyance for the determination made on our return. 
Moreover, given the degree of accuracy that may be required, allowing 
for the available means and the limited time at the disposal of the expedition, 
we found it advisable to adopt as the value of the longitude of Ibanda the 
mean of the two results, namely : 
Ibanda. A = 2 1 ' 0 m 43 s- 2 E.G. 
In the district between Entebbe and Port Portal there are two other points 
which offered the same conditions, and which consequently contributed to 
supply means of control. For Kichiomi, which is one of these two points, we 
obtained by the observation of a meridian altitude both going and returning 
.(Obs. Nos. 10 and 99) the following result: 
Kichiomi.0 = 0° 31' 20" N. 
Adopting this value for the calculation of longitude we obtained on going : 
Kichiomi.—Obs. No. 11.\ = 2 h 4 m 27 s- 3 E.G. 
318 
