The rule of the `Umayyads had been a period of tyrannical oppression on the part of the Arab rulers upon their non-Arab subjects and especially upon the _mawali_ or converts drawn from the native population of the conquered provinces who not only were not admitted to equality, as was the professed principle of the religion of Islam, but were treated simply as serfs. This was in no sense due to religious persecution, for it was the converts who were the most aggrieved, nor was it due to a racial antipathy as between a Semitic and an Aryan people, nor yet to anything that could be described as a “national” feeling on the part of the Persians and other conquered races, but simply a species of “class” feeling due to the contempt felt by the Arabs for those whom they had conquered and hatred on the part of the conquered towards their arrogant masters, a hatred intensified by disgust at their misgovernment and ignorance of the traditions of civilization. There were other causes also which helped to intensify this feeling of hatred especially in the case of the Persians. Amongst these was a semi-religious feeling, even amongst those who had become converts to Islam. It had been the old usage of the Persians to regard the Sasanid kings, the descendants of the legendary _kayani_ dynasty of heroes who had first established a settled community in Persia, as _bagh_ not quite perhaps what we should understand as “gods,” but rather as incarnations of deity, the divine spirit passing on by transmigration from one ruler to another, and so they ascribed to the king miraculous powers and worshipped him as the shrine of a divine presence. At the Muslim conquest the Sasanid kings had not only ceased to rule, but the dynasty had become extinct. Many of the Persians who, in spite of adopting Islam, still clung to their old ideas, were quite ready to treat the Khalif with the same adoration as their kings, but felt a distinct distaste for the theory of the Khalifate according to which the Khalif was no more than a chieftain elected in the democratic fashion of the desert tribes, a thing which seemed to them like reversion to primitive barbarism. Our own experience in dealing with oriental races has shown us that there is a great deal which must be taken seriously in ideas of this kind. Of course those who had been subjects of the Roman Empire had no inclination towards deifying their rulers, unless perhaps some who had been only recently incorporated from more oriental elements: but those who had been under Persian rule craved a deified prince. In A.H. 141-142 this took the form of an attempt to deify the Khalif by a fanatical sect of Persian origin known as the Rawandiyya which broke out into open revolt when the Khalif refused to be treated as a god and cast their leaders into prison: the members of the sect, and many other of their fellow-countrymen, considered that a Khalif was no valid sovereign who refused to be recognised as a deity. From the second century of the Hijra down to modern times there has been a continuous stream of pseudo-prophets who have claimed to be gods, or successful leaders who have been deified by their followers. The latest of these appears in the earlier phases of the Babi movement, A.D. 1844-1852, though the doctrines of re-incarnation and of the presence of the divine spirit in the leader seem to be less emphasized in present day Babism, at least in this country and America.