P.S.-In representing the vernacular terms in Roman characters I have followed the received mode of spelling; d, t, in italics, represent the hard cerebral sounds of those letters which have only one representative with us, as opposed to their soft dental sounds; r among the Todas has a peculiarly harsh and prolonged sound which I have represented by reduplication. The correct sound of the Tamil zh is a deep cerebral enunciation of the French j, formed by touching the back of the palate with the tongue. Such a sound is very common in Tibetan and its derivatives, wherein nearly every d and g aud ch becomes a harsh zh, as digarchi pronounced zhiggatzhi.