There is another short index, known as yet only in two MSS., called the Padanukramani, or "index of lines" (padas), and composed in the same mixed metre as the others. The Suktanukramani, which has not survived, and is only known by name, probably consisted only of the initial words (pratikas) of the hymns. It probably perished because the Sarvanukramani would have rendered such a work superfluous. No MS. of the Devatanukramani or "Index of gods" exists, but ten quotations from it have been preserved by the commentator Shadguruçishya. It must have been superseded by the Brihaddevata, an index of the "many gods," a much more extensive work than any of the other Anukramanis, as it contains about 1200 çlokas interspersed with occasional trishtubhs. It is divided into eight adhyayas corresponding to the ashtakas of the Rigveda. Following the order of the Rigveda, its main object is to state the deity for each verse. But as it contains a large number of illustrative myths and legends, it is of great value as an early collection of stories. It is to a considerable extent based on Yaska's Nirukta. Besides Yaska himself and other teachers named by that scholar, it also mentions Bhaguri and Açvalayana as well as the Nidana Sutra, A peculiarity of this work is that it refers to a number of supplementary hymns (khilas) which do not form part of the canonical text of the Rigveda. Later, at least, than the original form of these metrical Anukramanis, is the Sarvanukramani of Katyayana, which combines the data contained in them within the compass of a single work. Composed in the Sutra style, it is of considerable length, occupying about forty-six pages in the printed edition. For every hymn in the Rigveda it states the initial word or words, the number of its verses, as well as the author, the deity, and the metre, even for single verses. There is an introduction in twelve sections, nine of which form a short treatise on Vedic metres corresponding to the last three sections of the Rigveda Pratiçakhya. The author begins with the statement that he is going to supply an index of the pratikas and so forth of the Rigveda according to the authorities (yathopadeçam), because without such knowledge the Çrauta and Smarta rites cannot be accomplished. These authorities are doubtless the metrical indices described above. For the text of the Sarvanukramani, which is composed in a concise Sutra style, not only contains some metrical lines (padas), but also a number of passages either directly taken from the Arshanukramani and the Brihaddevata, or with their metrical wording but slightly altered. Another metrical work attributed to Çaunaka is the Rigvidhana, which describes the magical effects produced by the recitation of hymns or single verses of the Rigveda.