He made great contributions to the knowledge of Saadia, and planned a complete edition of Saadia's works in Arabic and French.
He collaborated with his father in the great edition of Saadia and the edition of Abu-1Walid, and also produced a number of important editions of other Arabic writers.
Not the least curiotis of the public performances are those of the serpent-charmers, who are generally Rifaia (Saadia) dervishes.
Many orders of Dervishes live in Egypt, the following being the most celebrated (1) the Rifhjh, and their sects the ~1lwhnia and Saadia; (2) the Qadiria (KShiria), or howling dervishes; (3) the Ahmedia, or followers of the sayyid Abmad alBaiJawi, and their sects the Beyumia (known by their long hair), Shinnawia, Sharawia and many others: and (4) the Baramia, or followers of the sayyid Ibrhim Ed-Deski.
The Saadia are famous for charming and eating live serpents, &c., and the Ilwania for eating fire, glass, &c. The Egyptians firmly believe in the efficacy of charms, a belief associated with that in an omnipresent and over-ruling providence.