To the Aitareya Brahmana belongs the Aitareya Aranyaka. It consists of eighteen chapters, distributed unequally among five books. The last two books are composed in the Sutra style, and are really to be regarded as belonging to the Sutra literature. Four parts can be clearly distinguished in the first three books. Book I. deals with various liturgies of the Soma sacrifice from a purely ritual point of view. The first three chapters of Book II., on the other hand, are theosophical in character, containing speculations about the world-soul under the names of Prana and Purusha. It is allied in matter to the Upanishads, some of its more valuable thoughts recurring, occasionally even word for word, in the Kaushitaki Upanishad. The third part consists of the remaining four sections of Book II., which form the regular Aitareya Upanishad. Finally, Book III. deals with the mystic and allegorical meaning of the three principal modes in which the Veda is recited in the Samhita, Pada and Krama Pathas, and of the various letters of the alphabet. To the Kaushitaki Brahmana is attached the Kaushitaki Aranyaka. It consists of fifteen chapters. The first two of these correspond to Books I. and V. of the Aitareya Aranyaka, the seventh and eighth to Book III., while the intervening four chapters (3-6) form the Kaushitaki Upanishad. The latter is a long and very interesting Upanishad. It seems not improbably to have been added as an independent treatise to the completed Aranyaka, as it is not always found in the same part of the latter work in the manuscripts. Brahmanas belonging to two independent schools of the Samaveda have been preserved, those of the Tandins and of the Talavakaras or Jaiminiyas. Though several other works here claim the title of ritual text-books, only three are in reality Brahmanas. The Brahmana of the Talavakaras, which for the most part is still unpublished, seems to consist of five books. The first three (unpublished) are mainly concerned with various parts of the sacrificial ceremonial. The fourth book, called the Upanishad Brahmana (probably "the Brahmana of mystic meanings"), besides all kinds of allegories of the Aranyaka order, two lists of teachers, a section about the origin of the vital airs (prana) and about the savitri stanza, contains the brief but important Kena Upanishad. Book V., entitled Arsheya-Brahmana, is a short enumeration of the composers of the Samaveda.