When the people which spread the Brahminical religion and institutions from the valley of the Ganges, extended them, by migration and conquest, over the Indian peninsula, large portions of the primitive population remained unsubdued and unconverted where physical circumstances specially favoured their resistance to force and to the pressure of moral influences; and, accordingly, numerous remnants of them are now seen, scattered widely under the most various aspects, and often under highly interesting relations to the dominant people.