The volumes of the project on the History of science, philosophy and culture in indian civilization aim at discovering the main aspects of India's heritage and present them in an interrelated way. these volumes, in spite of their unitary look, recognise the difference between the areas of material civilization and those of ideational culture. The Project is not being executed by a single group of thinkers and writers who are methodologically uniform or ideologically identical in their commitments. In fact, contributions are made by different scholars with different ideological persuasions and methodological approaches. the project is marked by what may be called 'methodological pluralism'. This volume will be of interest for all those who are concerned with the Vedic Agamic heritage which has gone through a long span of time retaining its identity.