But he did little further himself towards the completion of the work, and it was many years before any real progress was made with it. Meanwhile, the study of Zend had made great advances, more especially in the hands of Burnouf, who eventually turned his attention to the cuneiform inscriptions. But it is to Burnouf’s pupil, Lassen, as well as to Sir Henry Rawlinson, that the decipherment of these inscriptions owes its final completion. The discovery of the list of Persian satrapies in the inscription of Darius at Naksh-i-Rustem, and above all the copy of the long inscription of Darius on the rock of Behistun, made by Sir H. Rawlinson, enabled these scholars independently of one another to construct an alphabet which differed only in the value assigned to a single character, and, with the help of the cognate Zend and Sanskrit, to translate the language so curiously brought to light. The decipherment of the Persian cuneiform texts thus became an accomplished fact; what was next needed was to decipher the two versions which were inscribed at their side. But this was no easy task. The words in them were not divided from one another, and the characters of which they were composed were exceedingly numerous. With the assistance, however, of frequently recurring proper names even these two versions gradually yielded to the patient skill of the decipherer; and it was then discovered that while one of them represented an agglutinative language, such as that of the Turks or Fins, the other was in a dialect which closely resembled the Hebrew of the Old Testament. The monuments found almost immediately afterwards in Assyria and Babylonia by Botta and Layard soon made it clear to what people this dialect must have belonged. The inscriptions of Nineveh turned out to be written in the same language and form of cuneiform script; and it must therefore have been for the Semitic population of Assyria and Babylonia that the kings of Persia had caused one of the versions of their inscriptions to be drawn up. This version served as a starting-point for the decipherment of the texts which the excavations in Assyria had brought to light.