AFRICAN EXPLORERS OF THE EIGHTEENTH CENTURY. 49 
of dress likely to impose upon unsuspecting people. 
He then started, accompanied by a fellow-countryman 
named Joseph Frendenburg, who had been a Mussulman 
for more than twelve years, had already made three 
pilgrimages to Mecca, and was perfectly familiar with 
HORNEMANN DISGUISED AS A MOHAMMEDAN MERCHANT. 
the various Turkish and Arabic dialects. He was to act 
as Hornemann’s interpreter. 
On the 5th of September, 1798, the traveller left 
Cairo with a caravan, and visited the famous oasis of 
Jupiter Ammon or Siwah, situated in the desert on the 
east of Egypt. It is a small independent state, which 
acknowledges the Sultan, but is exempt from paying 
tribute. The town of Siwah is surrounded by several 
E 
