III. — Meteorological, etc., Observations. 



The following iirc the results obtained* : 



Altitude of Bweya ... relatively to Entelibe ni. 71 about 232-8 ft. 



„ Mitiana ... ,, ,, „ 



Biijongo ... „ 



Bimbye ... „ 



„ Kijemula ... „ „ „ 



,, Madudu ... „ ,, ,, 



„ Muduraa ... ,, „ ,, 



,, Lwamutukuza ,, ,, ,, 



,, Kichiomi ... ,, ,, ,, 



Misongo 



„ Kaibo ... „ 



„ Butiti ... „ ,, ,, , 



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

 either because obtained by isolated observations made at diflerent hours, or else 

 because to very slightly different levels correspond considerable horizontal 

 distances, as between Enteljl^e 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 sources 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 Portali 

 is 355 metres (1,170 feet). 



* The ealcxilation has been omitted for Katende which, as sliowii by the pressure, stands 

 at very nearly the same level as Entebbe. 



t From the comparisons made on tlie 30tli and 31st May, and again on the 21st and 

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

 (Negretti and Zambra) of the Englisli Observatory at Fort Portal, it appeared that tlie 

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

 this difPerence was veriBed in an equal degree with the two barometers of the expedition, 

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

 journey, it was thought reasonable to apply to all the pressures yielded by the barometer of 

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

 lit07, the correction of the Kew Observatory hai not yet been obtained for tlie Fort Portal 

 barometer. 



363 



