The work appears in five volumes. The volumes elaborate Buddhist and Jaina Philosophy and the six systems of Hindu thought; Samkara School of Vedanta besides the philosophy of the Yoga-vasistha and the Bhagavadgita; detailed account of the principal dualistic and pluralistic system; the Bhagavata Purana, Madhva and his school; and Southern Schools of Saivism. Each volume is devoted to the study of the particular school of thought of Indian Philosophy.
The book itself is monumental, brilliantly researched and presented. The kindle edition however is practically unreadable: scanned and machine converted. Unfortunate disservice to a great book.