Yagna is the most ancient ritual connecting human beings with the divine esence.It is not merely a fire sacrifice,but a combination of esoteric and exoteric elements to propitiate the cosmic energies.The spirit inherent in yagna is service and sacrifice as a way of life.In ancient Vedic society,yagna was an integral part of daily life,and played a vital role in providing communal prosperity,social peace and harmony with nature. This book offers a comprehensive survey of yagna as embodied in the Vedic tradition,looking at the structure,source and significance of the rituals and their relevance in this country.Rediscovery of the classical methodology and purpose of yajna can be a powerful tool for the transformance of human consciousness.