Til. — Meteorological, etc., Observations. 



altitudes, but also because they serve to give an idea of the climate of* that 

 interesting locality. 



Then at Table VII are brought together the data of Fort Portal for the 

 same period of time, liearing in mind that to the pressures reduced to 0° has 

 been applied the already-mentioned constant term of correction +5-17 mm. 

 Thenfrom the mean data of Tables VII and VIII was calculated the difference 

 of level between Bujongolo and Fort Portal. The first calculation was made 

 with the data of the synchronous midday observations at Bujongolo and Fort 

 Portal, and was found to be 2,276-7 imire.^ (7,408-5 feet). 



But when we allow for the considerable difterence of level between the two 

 observed stations, we cannot assert with certainty that the law of daily variation 

 of pressure is identical in both places, hence the coincidence of the hour of 

 oljservation does not imply identity of modifications in the atmospheric ebb and 

 flow, so that it becomes advisable to try and take advantage of the other 

 observed data too, besides those of midday. Therefore with the mean daily 

 values of pressure, temperature,! and vapour tension for Fort Portal (obtained 

 from the mean of the three observations of the hours 7, 14, and 21 for 

 Bujongolo) are associated the mean values of the pressure and vapour tension 

 deduced from the two observations of the hours 9 and 17. These, when account 

 is taken of the normal movement of the daily \'ariations of pressure and tension, 

 .should not differ greatly from the tliurnal mean. 



For the temperature of Bujongolo we have assumed the mean of the 

 maximum and minimum temperature, which, in the absence of more complete 

 data, is the one that approaches nearest to the mean daily temperature. 



With the values thus obtained, and recorded at foot of Tables VII and VIII, 

 the difference of level has been calculated between Fort Portal and Bujongolo, 

 and is found to be 2,2-55 - 7 metres (7,376 feet). 



Taking as a more approximate value the mean between this and the 

 preceding value, we get as the height of Bujongolo abo^e Fort Portal 

 .'i',-?6Y> mcfres (7,4.32 feet), and adding to this value the altitude of Fort I'ortal 

 above the sea, the elevation of Bujongolo above the sea is found to lie 

 3,79S metres (12,461 feet). 



The camp being established at Bujongolo, where, as already stated, regular 

 observations were taken three times daily from 15th June to 1 2th July, the 

 excursions began to the chief places in the Ruwenzori Range. The instruments 



* Owing to the requirements of daily life at the Bujongolo encampment, the meteoro- 

 logical observations were taken at the hours of 9, 12, and 17, instead of 7, 14, and 21, as at 

 Fort Portal and Entebbe. 



t In the calculation of temperature no account is taken of the maximum and miiiinunn, 

 because at times they disagree with the other temperatures of the day. 



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