Contents: Preface. I. Introduction: 1. Authorship of the Yoga-Sutras: the two Patanjali. 2. Tradition of their identity not earlier than tenth century. 3. Comparison of philosophical concepts does not confirm the tradition. 4. Date of the Sutras (Between A.D. 300 and 500). 5. Date of the Bhasya (Between A.D. 650 and 850). 6. Date of Vacaspatimisra's Tattva-vaisaradi (About A.D. 800 to 850). II. Analytical summary of the Yoga-Sutras: 1. Book 1, Concentration (Samadhi). 2. Book 2, Means of Attainment (sadhana). 3. Book 3, Supernormal powers (vibhuti). 4. Book 4, Isolation (kaivalya). III. The Yoga-Sutras translated without the comment of the explanation: 1. Being the Sutras translated in groups, with group-headings by translator. IV. Translation of Patanjali's Yoga-Sutras or Mnemonic Rules: 1. Together with the comment or Yoga-Bhasya, attributed to Veda Vyasa and Vacaspatimisra's explanation or Tattva-vaisaradi: i. Book 1, Concentration (Samadhi). ii. Book 2, Means of Attainment (sadhana). iii. Book 3, Supernormal powers (vibhuti). iv. Book 4, Isolation (kaivalya). V. Appendices: 1. Bibliography of works referred to in this volume. 2. Index of quotations in the Comment, in the order of citation. 3. Index of the same grouped according to their sources. 4. Index of quotations in the Tattva-vaisaradi, in the order of citation. 5. Index of the same grouped according to their sources. 6. Quotations not yet traced to their sources. Index.

"Patanjali is the author of the book. Patanjali's Sutras were written at some time in the fourth or fifth century of our era. The book 'Yoga-System of Patanjali' deals with Sanskrit text with English translation and embracing the Mnemonic Rules, called 'Yoga-System of Patanjali' and the comment, called 'Yoga Bhasya' attribute to Veda Vyasa and the explanation, called 'Tattva-Vaisaradi' of Vacaspati-Misra." (jacket)