You know that we possess no MS. of the Old Testament in Hebrew older than about the tenth century after the Christian era; yet the Septuagint translation by itself would be sufficient to prove that the Old Testament, such as we now read it, existed in MS. previous, at least, to the third century before our era. By a similar train of argument, the works to which I referred before, in which we find every hymn, every verse, every word and syllable of the Veda accurately counted by native scholars about five or six hundred years before Christ, guarantee the existence of the Veda, such as we now read it, as far back at least as five or six hundred years before Christ. Now in the works of that period, the Veda is already considered, not only as an ancient, but as a sacred book; and, more than this, its language had ceased to be generally intelligible. The language of India had changed since the Veda was composed, and learned commentaries were necessary in order to explain to the people, then living, the true purport, nay, the proper pronunciation, of their sacred hymns. But more than this. In certain exegetical compositions, which are generally comprised under the name of Sûtras, and which are contemporary with, or even anterior to, the treatises on the theological statistics just mentioned, not only are the ancient hymns represented as invested with sacred authority, but that other class of writings, the Brâhma_n_as, standing half-way between the hymns and the Sûtras, have likewise been raised to the dignity of a revealed literature. These Brâhma_n_as, you will remember, are prose treatises, written in illustration of the ancient sacrifices and of the hymns employed at them. Such treatises would only spring up when some kind of explanation began to be wanted both for the ceremonial and for the hymns to be recited at certain sacrifices, and we find, in consequence, that in many cases the authors of the Brâhma_n_as had already lost the power of understanding the text of the ancient hymns in its natural and grammatical meaning, and that they suggested the most absurd explanations of the various sacrificial acts, most of which, we may charitably suppose, had originally some rational purpose. Thus it becomes evident that the period during which the hymns were composed must have been separated by some centuries, at least, from the period that gave birth to the Brâhma_n_as, in order to allow time for the hymns growing unintelligible and becoming invested with a sacred character. Secondly, the period during which the Brâhma_n_as were composed must be separated by some centuries from the authors of the Sûtras, in order to allow time for further changes in the language, and more particularly for the growth of a new theology, which ascribed to the Brâhma_n_as the same exceptional and revealed character which the Brâhma_n_as themselves ascribed to the hymns. So that we want previously to 600 B.C., when every syllable of the Veda was counted, at least two strata of intellectual and literary growth, of two or three centuries each; and are thus brought to 1100 or 1200 B.C. as the earliest time when we may suppose the collection of the Vedic hymns to have been finished. This collection of hymns again contains, by its own showing, ancient and modern hymns, the hymns of the sons together with the hymns of their fathers and earlier ancestors; so that we cannot well assign a date more recent than 1200 to 1500 before our era, for the original composition of those simple hymns which up to the present day are regarded by the Brahmans with the same feelings with which a Mohammedan regards the Koran, a Jew the Old Testament, a Christian his Gospel.