Note 064

Abulfeda (in Vit. Mohammed. c. 1, 2) and Gagnier (Vie de Mahomet, p. 25 - 97) describe the popular and approved genealogy of the prophet. At Mecca, I would not dispute its authenticity: at Lausanne, I will venture to observe,
  1. That from Ismael to Mahomet, a period of 2500 years, they reckon thirty, instead of seventy five, generations:
  2. That the modern Bedoweens are ignorant of their history, and careless of their pedigree, (Voyage de D'Arvieux p. 100, 103.)
    The History Of The Decline And Fall Of The Roman Empire Fall In The EastChapter 50