Dialectical texts known as Vadagranthas are novel contribution of the new logicians. They are written in the style of argument on a particular debatable concept in the highly developed Navya Nyaya technical language. All those texts, containing complicated philosophical issues form the core of logical system developed by Gadadhara Bhattacharya, successors of Gangesa. In the present book eight vada-granthas edited for the first time and published will facilitate the study of Navya Nyaya logic. It has brought to light the sublime contribution of Raghudeva Bhattacharya, hitherto unknown Naiyayika. It will also open door for further research regarding Raghudeva’s remaining unpublished works.