The careful investigations of Professor Jacobi have shown that the Ramayana originally consisted of five books only (ii.-vi.). The seventh is undoubtedly a later addition, for the conclusion of the sixth was evidently at one time the end of the whole poem. Again, the first book has several passages which conflict with statements in the later books. It further contains two tables of contents (in cantos i. and iii.) which were clearly made at different times; for one of them takes no notice of the first and last books, and must, therefore, have been made before these were added. What was obviously a part of the commencement of the original poem has been separated from its continuation at the opening of Book II., and now forms the beginning of the fifth canto of Book I. Some cantos have also been interpolated in the genuine books. As Professor Jacobi shows, all these additions to the original body of the epic have been for the most part so loosely attached that the junctures are easy to recognise. They are, however, pervaded by the same spirit as the older part. There is, therefore, no reason for the supposition that they are due to a Brahman revision intended to transform a poem originally meant for the warrior caste. They seem rather to owe their origin simply to the desire of professional rhapsodists to meet the demands of the popular taste. We are told in the Ramayana itself that the poem was either recited by professional minstrels or sung to the accompaniment of a stringed instrument, being handed down orally, in the first place by Rama's two sons Kuça and Lava. These names are nothing more than the inventions of popular etymology meant to explain the Sanskrit word kuçilava, "bard" or "actor." The new parts were incorporated before the three recensions which have come down to us arose, but a considerable time must have elapsed between the composition of the original poem and that of the additions. For the tribal hero of the former has in the latter been transformed into a national hero, the moral ideal of the people; and the human hero (like Krishna in the Mahabharata) of the five genuine books (excepting a few interpolations) has in the first and last become deified and identified with the god Vishnu, his divine nature in these additions being always present to the minds of their authors. Here, too, Valmiki, the composer of the Ramayana, appears as a contemporary of Rama, and is already regarded as a seer. A long interval of time must have been necessary for such transformations as these.