This book of Gautama contains the Nyaya system of philosophy and its Method which like that of the Vaisesikas consists of the enumeration, definition and examination of the categories. It has enjoyed great popularity as is evident from the numerous commentaries that have from time to time centred around it.
The book is divided into five chapters(adhyayas), each containing two lectures called ahnikas.
The present edition has the following peculiarities: It contains (1) Sanskrit Text in Nagari character, followed by (2) Sanskrit vocabulary consisting of English Synonym of each and every word of the Sutra, (3) English Translation of the Sutra and (4)its Exposition. It contains the Nyaya-Suchi- Nibandha of Vacaspati Misra in English Translation.App.2adds Sutras omitted in the second edition. App. 3 is Vatsyayaya's commentary in summary form in English.APP. 4 is an alphabetical index to the Sutras. App 5 is World Index and App. 6 is an Index of words in English.