This fact has one important bearing on the history of the drama. The suggestion of Pischel [150] that the verses alone were once preserved, and the prose left to be improvised would have been plausible only if the verses had been essentially the important elements in the dialogue, as in the supposed Vedic Ākhyāna hymns. But this is assuredly not the case; the verses do little to help on the action; as in the epic, they express descriptions of situations and emotions; when movement of the play is requisite recourse is had to prose. Or the verses serve to set out maxims, as is natural in view of the great fondness of India for gnomic poetry, seen already in the verses introduced into the legend of Çunaḥçepa in the Aitareya Brāhmaṇa. In this again there is a close parallel with the epic, nor is it surprising that the epic poet, like Açvaghoṣa and Kālidāsa, was often devoted to the drama. A further source of literary inspiration must undoubtedly be seen in the work of the lyric poets, of whose work clear evidence, as well as some scattered fragments, is preserved to us in the Mahābhāṣya of Patañjali. [151] Moreover, to these lyric writers it is probable that the drama owed some of its metrical variety; in the development of the metres with a fixed number of syllables, each of determined length, from the older and freer Vedic and epic forms, it may be taken as certain that the erotic poets, who had a narrow theme to handle, and had every motive to aim at variety of form and effect, must have contributed largely, a conclusion which is also strongly suggested, if not proved, by the very names of the metres with their erotic suggestion. [152] PART II THE DEVELOPMENT OF THE SANSKRIT DRAMA III AÇVAGHOṢA AND THE BUDDHIST DRAMA 1. THE ÇĀRIPUTRAPRAKARAṆA The discovery of fragments of manuscripts on palm-leaf, of great antiquity, at Turfan, has through the energy of Professor Lüders revealed to us the existence of at least three Buddhist dramas. Of one of these the authorship is happily certain, for the colophon of the last act has been preserved, and it records that the drama was the Çāriputraprakaraṇa of Açvaghoṣa, son of Suvarṇākṣī; it gives also the fuller title Çāradvatīputraprakaraṇa and the number of acts as nine.