At night the same religious ceremonies were repeated in the temple, and I was allowed to sleep in the room overlooking the inner court from whence I had witnessed them on the previous evening. After all had retired to rest, the Yezidi Mullah recited, in a low chanting tone, a religious history, or discourse, consisting of the adventures and teachings of a certain Mirza Mohammed. He stood before the burning lamp, and around him were at full length on the stone pavement, and covered by their white cloaks, the sleeping Sheikhs and Cawals. The scene was singularly picturesque and impressive. Next morning I visited, with Mr. Rassam and Mr. Cooper, the rock-sculptures of Bavian, which are not more than six miles from the valley of Sheikh Adi in the same range of hills; but I will defer a description of these remarkable monuments until I come to relate my second journey to the spot. Cawal Yusuf had promised, on the occasion of the festival, to show me the sacred book of the Yezidis. He accordingly brought a volume to me one morning, accompanied by the secretary of Sheikh Nasr, the only Yezidi, as far as I am aware, who could read it. It consisted of a few tattered leaves, of no ancient date, containing a poetical rhapsody on the merits and attributes of Sheikh Adi, who is identified with the Deity himself, as the origin and creator of all things, though evidently distinguished from the Eternal Essence by being represented as seeking the truth, and as reaching through it the highest place, which he declares to be attainable by all those who like him shall find the truth.[29] This was the only written work that I was able to obtain from the Yezidis; their cawals repeated several prayers and hymns to me, which were purely laudatory of the Deity, and unobjectionable in substance. Numerous occupations during the remainder of my residence in Assyria prevented me prosecuting my inquiries much further on this subject. Cawal Yusuf informed me that before the great massacre of the sect by the Bey of Rahwanduz, they possessed many books which were lost during the general panic, or destroyed by the Kurds. He admitted that this was only a fragmentary composition, and by no means "the Book" which contained the theology and religious laws of the Yezidi. He even hinted that the great work did still exist, and I am by no means certain that there is not a copy at Baasheikhah or Baazani. The account given by the Cawal seems to be confirmed by the allusion made in the poem to the "Book of Glad Tidings," and "the Book that comforteth the oppressed," which could scarcely have been inserted for any particular purpose, such as to deceive their Mohammedan neighbours. I will here add a few notes concerning the Yezidis and their faith to those contained in my former work; they were chiefly obtained from Cawal Yusuf.