Contents: Portrait of the late MM Dr. Satis Chandra. Vidyabhushana frontispiece author's preface. Introduction. Foreword by Sir Asutosh Mukerjee. I. The Ancient school of Indian logic: i. Anviksiki--the science of inquiry (650 B.C.--100 A.D.): 1. The growth et anviksiki into an art of debate. 2. The teachers of Anviksiki (Philosophy and logic). 3. The doctrines of anviksiki. 4. Reception accorded to anviksiki. ii. Nyaya-sastra--the science of true reasoning: 1. The growth of Nyayasastra. 2. Contents of the Nyaya-sutra. 3. Commentaries the am Nyaya-sutra. 4. The Nyaya recognized as a branch of orthodox learning. II. The mediaeval school of Indian logic-called Pramanasastra, the science of right knowledge: i. Jaina Logic: 1. Topics of logic mentioned in the Jaina canons. 2. Early Jaina writers on logic. 3. Jaina writers on systematic logic. 4. Continuity of Jaina logic. ii. The Buddhist logic: 1. Topics of logic mentioned in the old Buddhist literature. 2. Early Buddhist writers on logic. 3. Systematic Buddhist writers on logic. 4. The decline of Buddhist logic. III. The Modern school of Indian logic: i. Prakarana--manual of logic: 1. The Nyaya-Prakarana reduces its categories to me. 2. Nyaya-prakaranas embodying Vaisesika categories. 3. The Vaisesika Prakarana embodying the Nyaya category of Pramana. 4. Works treating of certain topics of the Nyaya and certain topics of the Vaisesika. ii. Terka-sastra--the science of dialectics: 1. Formation of the Tarka-sastra. 2. Tattva-cintamani--the earliest work on Tarka-Sastra. 3. Commentaries on the Tattva-Cintamani. 4. Present state of the science of dialectics. Appendices. Index.

"Object in this volume is to write the history of what is called Nyaya, one of the six schools into which orthodox philosophy in India is divided. The word 'logic', although it is in common parlance held synonymous with Indian Nyaya, is not exactly identical with it. Logic covers some of the subjects of Nyaya as well as Vaisesika and is not coextensive with either.

Indian logic has been differently defined in different ages but the definition generally accepted is the science which ascertains valid knowledge either by means of the six senses or by means of the five members of the syllogism; in other words, perception and inference are the subject-matter of logic." (jacket)