171 
the other in the morning of the 9th, consequently it wa£ 
impossible for me to observe either the one or the other 
at Medina, since the distance from Jenboa to that city 
is four nights journey. I was equally prevented from 
remarking the chronometrical difference between the 
two places, for no watch can withstand the violence of 
the movements of a dromedary or 'camel, flardly any 
means therefore were left me of obtaining the longitude 
of Medina, and I must own that this union of obstacles 
to the accomplishment of my wish, gave me very great 
concern. 
I sent for some dromedaries immediately, to enable 
us to traverse the country as quickly as possible, but 
with all my diligence, I was not able to set out before 
the next evening. I took with me nothing but a small 
trunk, with my instruments. Three servants alone ac- 
companied me. I left the others, with my effects, on 
board the vessel. 
CHAPTER XII. 
Journey towards Medina. — Djideida.— -Ali Bey is arrested by the Wehhabites.— 
Inconveniences thence resulting. — He is sent with a Caravan of persons em* 
ployed in the Temple of Medina.— Yenboa. 
I left Jenboa on Tuesday the 31st March at five 
in the evening. I was mounted upon a dromedary, as 
were also my servants, and the Turkish Pilgrims. Our 
caravan consisted of fifty dromedaries. 
We marched towards the E. J S. E. over a sandy 
plain, which here and there presented a few traces of 
vegetation* 
