An attempt to determine the meaning and contents of the notion of dravya and distinguish between the two concepts of guna and paryaya. Cursorily also discusses notions of realtivity, continuity, divisibilty and negation. It presents an analytical account and a critical estimation of the methods of knowledge with an investigation into the nature and the logical evolution of the theory of manifoldness (anekantavada). The work has aimed throughout at a comparative treatment of the problems. Effort has been made to avoid strained and far-fetched comparisons and contrasts and to treat criticisms and controversies in a constructive spirit.