Synopsis The present book is an attempt to cover various aspects of the Theory of capital from the classicals to post-sraffians. Starting from what is capital the author has tried to trace the history of basic concepts and important controversies in Capital Theory. This would help the reader to get an insight into the evolution of the concepts which may in turn highlight the issues in the controversies. The capital theoretic base of classical, neo-classical and post-kenesian Schools has been analysed with a view to understand the importance of Capital Theory in Economic Analysis. The limitations of the traditional approach to Multiple Switching is critically examined and an alternative approach is explored.