the point of difference being the nature of the proof on which his rights are founded, and the order of succession among his descendants. These four sects and their opinions are as follows:-- I. The first and most innocuous of the sects which maintained the rights of the family of Ali were the Keissanee, so named from Keissan, one of his freed-men. These, who were subdivided into several branches, held that Ali's rights descended, not to Hassan or Hussein, but to their brother, Mohammed-ben-Hanfee. One of these branch-sects maintained that the imamat _remained_[11] in the person of this Mohammed, who had never died, but had since appeared, from time to time, on earth, under various names. Another branch, named the Hashemites, held that the imamat descended from Mohammed-ben-Hanfee to his son Aboo-Hashem, who transmitted it to Mohammed, of the family of Abbas, from whom it descended to Saffah, the founder of the Abbasside dynasty of khalifs[12]. It is quite evident that the object of this sect was to give a colour to the claims of the family of Abbas, who stigmatized the family of Ommiyah as usurpers, and insisted that the khalifat belonged of right to themselves. Aboo-Moslem, the great general who first gave dominion to the family of Abbas, was a real or pretended maintainer of the tenets of this sect, the only branch, by the way, of the Sheähs which supported the house of Abbas. [Footnote 11: Hence they were named the Standing (_Wakfiyah_).] [Footnote 12: Abbas, the ancestor of this family, was one of the uncles of the Prophet. They obtained possession of the khalifat A.D. 750, and retained it through an hereditary succession of princes for 500 years. Al-Mansoor, the second khalif of this dynasty, transferred the royal residence from Damascus, where the Ommiades had dwelt, to Bagdad, which he founded on the banks of the Tigris. This city, also named the City of Peace, the Vale of Peace, the House of Peace, has acquired, beyond what any other town can claim, a degree of romantic celebrity by means of the inimitable Thousand and One Nights. Such is the ennobling power of genius!] II. A second branch of the Sheähs was named Zeidites. These held that the imamat descended through Hassan and Hussein to Zein-al-Abedeen, the son of this last, and thence passed to Zeid (whence their name), the son of Zein; whereas most other Sheähs regarded Mohammed Bakir, the brother of Zeid, as the lawful imam. The Zeidites differed from the other Sheähs in acknowledging the three first khalifs to have been legitimate successors of the Prophet. Edris, who wrested a part of Africa from the Abbasside khalifs, and founded the kingdom of Fez, was a real or pretended descendant of Zeid.