THE SOURCE OF THE NILE. 293 



Jidda is in lat. 2 8° o' 1" north, and in long. 39 16' 45" 

 eafl of the meridian of Greenwich. Our weather there had 

 few changes. The general wind was north- weft, or more 

 northerly. This blowing along the direction of the Gulf 

 brought a great deal of damp along with it ; and this damp 

 increafes as the feafon advances. Once in twelve or four- 

 teen days, perhaps, we had a fouth wind, which was always 

 dry. The higheft degree of the barometer at Jidda, on the 

 5th of June, wind north, was 26 6\ and the loweft on the 

 1 8th of fame month, wind north- well, was 25 7'. The 

 •higheft degree of the thermometer was 97 on the 12th of 

 julv, wind north, the loweft was 78 wind north. 



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CHAP. 



