Independent support for the view of the dialogues as mystery plays in nuce is given by Dr. Hertel, [10] whose argument is largely based on the doctrine that the Vedic hymns were always sung, and that in singing it would have been impossible for a single singer to make the necessary distinction between the different speakers, which would have been possible if the hymns had not been sung. The hymns, therefore, represent the beginnings of a dramatic art, which may be compared with the form of the Gītagovinda. [11] But, what is more important, he seeks to find an actual drama on an extended scale in the Suparṇādhyāya, [12] a curious and comparatively late Vedic text. In his view, accordingly, the Vedic drama does not stand isolated; it is seen in the Ṛgveda only in its beginnings; the Suparṇādhyāya displays it en route to further development, and in the Yātrās we can see a continuation of the old type, which aids us in following the growth from the Vedic drama of the classical drama of India. In this regard there is a distinct divergence of view between the two supporters of the dramatic theory, for Professor von Schroeder regards the Yātrās as genuinely connected with the later drama, being developed in close connexion with the cult of Viṣṇu-Kṛṣṇa and Rudra-Çiva, but as representing a different development from the same root as the Vedic dialogues. Of this other side of the drama he finds hints in the traditional connexion of the Gandharvas and Apsarases with the drama, for these in his view are essentially phallic deities. There is, of course, no doubt of the possibility of the dialogues really representing portions of the old ritual in which the priests assumed the character of gods or demons, for there are abundant parallels for such a supposition. But there is no sufficient ground to compel us to seek for such an explanation of these hymns; that the Ṛgveda contains nothing save what is connected with ritual is a postulate which is not made by the Indians themselves, and has no justification save in the desire for symmetry. On the contrary, it is perfectly legitimate and much more natural to regard the Ṛgveda as a collection of hymns, in the vast majority of cases of ritual origin, but including some more secular poetry, to which genus alone can we reasonably attribute the battle hymns of Viçvāmitra and Vasiṣṭha. The fact that such hymns disappear in the later Vedic literature is then natural, for that literature represents unquestionably hymns collected definitely for ritual uses, and therefore nothing was admitted which could not be employed therein. To assume, therefore, that a ritual explanation must be found, and to find it in ritual drama is illegitimate, and the only justification for accepting the view in any case must lie in the fact that it affords a better explanation of the hymn than any which can be given otherwise.