 It extends altogether to ten p"rapāṭhakas" or 'Great Lessons', i.e.books or chapters, of which the last four are Upanishads, and the first six, are Aranyaka strictly so-called'.The 10 chapters (p"rapāṭhakas") of the Taittiriya Aranyaka, including numbers of "anuvakas" (sections) for each, are as follows