Avestan. The translation of the Avestan books, probably made under these circumstances as early as A. D. 350, is called the Huzvaresch. In regard to some of these particulars there are questions still under investigation, but upon which it is not worth our while to pause here. For example, Spiegel thinks the Zend identical with the Pehlevi of the fourth century; Westergaard believes it entirely distinct from Pehlevi, and in truth only a disguised mode of writing Parsee, the oldest form of the modern Persian language. The source from which the fullest and clearest knowledge of the Zoroastrian faith, as it is now held by the Parsees, is drawn, is the Desatir and the Bundehesh. The former work is the unique vestige of an extinct dialect called the Mahabadian, accompanied by a Persian translation and commentary. It is impossible to ascertain the century when the Mahabadian text was written; but the translation into Persian was, most probably, made in the seventh century of the Christian era.4 Spiegel, in 1847, says there can be no doubt of the spuriousness of the Desatir; but he gives no reasons for the statement, and we do not know that it is based on any other arguments than those which, advanced by De Sacy, were refuted by Von Hammer. The Bundehesh is in the Pehlevi or Zend language, and was written, it is 2 Ueber die Heiligen Schriften der Arier. Jahrbucher fur Deutsche Theologie, 1857, band ii. ss. 146, 147. 3 Essay on the Veda and the Zend Avesta, p. 24. See also Bunsen's Christianity and Mankind, vol. iii. p. 114. 4 Baron von Hammer, in Heidelberger Jabrbucher der Literatur, 1823. Id. in Journal Asiatique, Juillet, 1833. Dabistan, Preliminary Discourse, pp. xix. lxv.