_Kocch_ means a population, which possibly amounts to as much as a million souls, extended from about 88° to 93½° East long., and 25° to 27° North lat., and of which Kocch Behar is the political centre. The term is _ethnological_--not political. It is ethnological, and not political, because, although originally native, it has since been partially abandoned. _All_ the inhabitants of the parts in question _once_ called themselves Kocch; and Kocch they were called by their neighbours the Mech. At this time the country was unequivocally other than Indian; _i.e._, in the same category with that of the Garo and Bodo. Since then, however, great changes have taken place; so that, just as Wales is partially Anglicized, the Welsh language being replaced by the English, the Kocch--the native tongue--is under the process of being replaced by a Hindú dialect. Nevertheless, just as many a Welshman who speaks nothing but English is still a Welshman, so are the Kocch, who have changed their languages, Bodo, Garo, or something closely akin, in ethnological position. The extent to which different portions of the once great Kocch nation have abandoned or retained their original characteristics is easily measured. 1. Those who have changed most speak a form of the Bengali, and are imperfect Mahometans; imperfect, because their creed is strongly tinctured with Hinduism. Thus the very epithet which they apply to themselves is Brahminical; _Rájbansi_=_Suryabansi_=_Sun-born_. The converted Kocch of the Mahometan creed are chiefly of the lower order of the province of Behar. 2. Those who have changed, but changed less than the _Mahometans_ of Behar, are either Brahminists or Buddhists--speaking the same Bengali dialect as the last. These are chiefly the higher classes of the population of Behar. They are Kocch in the way that the Cornishmen are Welsh. They consider them _Rájbansi_ also. Doubtless, their Hinduism is imperfect; _i.e._, tinctured with the original paganism.