speaking one or other of the aboriginal languages. Islam and Christianity are, of course, imported and proselytising religions, and yield few if any clues to racial or social origins. Many Muhammadans profess to be, and not a few are, of authentic foreign origin. But during the seven hundred years of Muslim rule in India, there was much intermarriage with native races, and even more conversion. It is curious that, as in the case of Christianity, the conversions have been mostly among tribes and classes of the humbler sort. These were not denied admission into Hinduism, but they were only admitted on terms of social and racial degradation. Islam and Christianity alike claim to overlook the accidents of birth and status, and hence attract those to whom Hinduism only offered a place among the lowest ranks of its social hierarchy. But even in the case of the religions of Christ and Muhammad, the inveterate Indian tendency to recognise and insist on breed and social status has asserted itself again and again. Among Muhammadans, the Arabic tribal names have come to be the designations of social units which differ but little from the endogamous castes of Hinduism, and the same tendency is already evident among Christian converts. There is a marked reluctance in some quarters among ex-Hindus to intermarry with ex-Muslims, or even to participate in sacramental Communion with them. As with caste, so with religion, the divisions are not strictly horizontal. As Christianity is not one thing all over Europe, but has differences of creed, ritual, and practice corresponding to racial differences, so the Hinduism, and even the Muhammadanism, of different provinces varies. There is no sharp boundary; there are elements in common wherever we go. But just as Dravidian temple architecture can be easily distinguished, even by the unpractised eye, from that of the edifices of the Gangetic plains, so local peculiarities of belief or ritual may come to the aid of the anthropologist, and may suggest or confirm distinctions more easily verified and more capable of scientific proof. The study of all these matters is not without a practical and administrative interest at the present time. A hundred and fifty years ago, to the racial, tribal, and caste differences, accompanied by differences of language and religion, were added political divisions, accentuated by frequent dynastic or predatory wars. British rule has introduced two powerful unifying influences. Our system of administration, while it is adapted more or less effectively (more in some cases, less in others, according to the talent and character of local officers) to local precedents and local needs, is moulded by the great supervising and consolidating authority of the Governor-General in Council.