It is mainly with the two principal sets nē, nō of Gujarātī and rai, rō of Mārwāṛī, and with their older forms, that I propose to deal in these pages. Since the right clue to the explanation of them—with the exception of rō, which presents no difficulty—has been missed by scholars as yet, I trust that the present investigation into their origin will be of use even to such as might hesitate to accept all my views unreservedly.