— 
THE SOURCE OF THE NILE. 581 
no fooner got into the plain than we felt great fymptoms of 
the fimoom, and about a quarter before twelve, our prifoner 
firft, and then Idris, cried out, The Simoom! the Simoom ! 
My curiofity would not fuffer me to fall down without 
looking behind me. About due fouth, a little to the eaft, 
I faw.the coloured haze as before. It feemed now to be ra- 
ther lefs compreffed, and to have with it a fhade of blue. 
The edges of it were not defined as thofe of the former, 
but like a very thin fmoke, with about a yard in the mid- 
dle tinged with thofe colours. We all fell upon our faces, 
and the fimoom paffed with a gentle ruffling wind. It con- 
tinued to blow in this manner till near three o'clock, fo we 
were all taken ill that night, and fcarcely. ftrength was left 
us. to load the camels and arrange the baggage. ‘This day 
one of our camels died, partly famifhed, partly overcome 
with extreme fatigue, fo that, incapable as we were of la- 
bour, we were obliged, for felf-prefervation’s fake, to cut 
off thin flices of the flefhy part of the camel, and hang it 
an fo many thongs upon the trees all night, and after upon 
the baggage, the fun drying it immediately, fo as to pre- 
vent putrefaction. 
Ar half paft eight in the evening we alighted at a well 
called Naibey, in a bare, fandy plain, where there were a few 
flraggling. acacia-trees. We had all this day feen large 
blocks of foffile falt upon the furface of the earth where 
we trod. This was the caufe, I fuppofe, that both the fpring 
at Terfowey, and now this of Naibey, were brackith to the 
tafte, and efpecially that of Naibey. We found near the 
well the corpfe of a man and two camels upon the ground. 
it was apparently long ago that this accident happened, for 
the moifiure of the camel was fo exhaled that it feemed to 
weigh 
