Madhurya Kadambini -Hindi: A scientific analysis of the various stages of advancement, i.e. from the birth of Bhakti to Sraddha, Guru-padasraya to nistha, ruci, asakti upto prema, that one ascends while on the devotional path, done in 8 showers (i.e. chapters). There is no precedent or parallels to this work of Srila Visvanatha Cakravarti Thakura. A must read book for those who are curious to know about the growth, symptom and subtleties of bhakti.