III. — Meteorological, etc., Observations. 



The following are the results olitaiiied* : 



Altitude of Bweya ... relatively to Entubhc in. 



Mitiana 

 Bujongo 

 Bimbye 

 Kijemula 

 Madudu 

 Miiduma 

 „ Lwamutukuza ,, „ „ 



Kichiorai 

 Misongo 

 Kaibo 

 Butiti 



As it is almost needless to state, these altitudes have very uncertain \alue, 

 either because obtained Ijy isolated observations made at different hours, or else 

 because to very slightly different levels correspond considerable horizontal 

 distances, as between Entebbe and Fort Portal (about 225 kilometres = nearly 

 140 miles). 



But for this last inconvenience, greater probabilities of accuracy would 

 be presented by the determination of the altitude of Fort Portal. Here there 

 is an observatory which has been recently founded, but the height of which 

 relatively to Entebbe has not yet been determined geodetically, but was 

 obtained from the observed data during the whole quarter. May, June, and 

 July, 1906, so that the influence of the various soui-ces of error may be 

 regarded as considerably lessened. 



In the subjoined Table III are recorded all these data, the outcome of 

 which was that the difference of altitude between Entebbe and Fort Portalf 

 is 355 metres (1,170 feet). 



* The calculation has been omitted for Katende which, as sliown bv the pressure, stands 

 at very nearly the same level as Entebbe. 



•)■ From the comparisons made on the 30th and 31st May, and again on the 21st and 

 24th July between the two Fortin barometers of tlie expedition and tlie barometer No. 2,025 

 (Xegretti and Zambra) of tlie English Observatory at Fort Portal, it appeared that the 

 former gave a mean indication of 5-17 mm. = 4 inch (at 0°) above that of tlie latter. Since 

 tins difference was verified in an equal degree witli the two barometers of the espedition, 

 which kept in perfect agreement with each otiier at Fort Portal, as they had before the 

 journey, it was thought reasonable to apply to all tlu- pressures yielded by tlie barometer of 

 the Fort Portal Observatory, the eoiistaiil correction 5-17 mm. To the end of November, 

 1907, the correction of the Kew Observatory Iia I not yet been obtained for the Fort Portal 

 barometer. 



363 



