The book deals with the different aspects of Jatavedas which come as an epithet of the firegod Agni in the Vedic Mantras. The present work has been divided into six chapters. In the Introductory Chapter a brief account of all the important epithets of Agni, Viz. Yaisvanara. Narasamsa, Tanunapat etc. has been given. Chapter 11 treats various derivations, etymologies and meanings of Jatavedas, Chapter III expounds the spiritual concept of Jatavedas studying him as an Immortal Being. Chapter IV deals with the naturalistc concepts interpreting him as terrestrial, aerial, celestial and funeral fires. In the Fifth Chapter (V), the ritual aspects of Jatavedas have been discussed as per the traditional interpretations. Chapter VI deals with the secular side of Dayananda where Jatavedas represents a benevolant king, a brilliant scholar, a real friend as well as an ideal house-holder etc. A summary of the above study is given in the conclusion.