The holy places, associated with the Mother Goddess and spread over various parts of the Indian subcontinent, have been popular pilgrim spots far a long time. According to same late Tantric texts ascribable to Eastern India, the number of such Saktatirthas is fifty one, and the present monograph is a dissertation on the origin and development of this conception. Thus it is, at the same time, the study of a number of Tantric and other texts as well as of certain problems of Tantric religion and of historical geography. It is unique in its approach because Tantra Studies have not progressed satisfactorily so far on scientific lines. The present monograph has been regarded by a competent authority as 'a made of accurate and penetrating investigation' which has brought honour to its author.