v. 1. Mythical and legendary accounts of the origin of caste, with an enquiry into its existence in the Vedic age. 1868 -- v. 2. Inquiry whether the Hindus are of Trans-Himalayan origin, and akin to the western branches of the Indo-European race. 1871 -- v. 3. The Vedas: opinions of their authors and of later Indian writers on their origin, inspiration, and authority. 1868 -- v. 4. Comparison of the Vedic with the later representations of the principal Indian deities. -- v. 5. Contributions to a knowledge of the cosmogony, mythology, religious ideas, life and manners, of the Indians in the Vedic age