The object of this book is not only to explain the principles of Jurisprudence but also of Legal Theory. A detailed study of the same has been attempted in this edition. I have drawn largely on the works of Salmond, Prof. R.W. M. Dias, Lord Lloyd, Allen, Hall, Hart, Roscoe Pound, Paton and others and I am greatly indebted to all of them. At the end of every chapter, I have given Suggested Readings which will be found useful.It gives me great pleasure to say that the present edition is a great improvement on the previous editions of this book. A com­parison will show that most of the book has been rewritten. Chapters XXI to XXIX dealing with Analytical Legal Positivism, Pure Theory of Law, Historical School of Law, Philosophical School of Law, Sociological School, American Realism, The Scandinavian Realists and Natural Law are new additions. Chapters on Nature and Scope of Jurisprudence, The Nature of Law, Kinds of Law, Law and Morals, Administration of Justice, Legislation, Precedent, Custom, Legal Rights and Duties, Ownership and Possession, Per­ sons and Liability have been rewritten. There is hardly any chapter which has not been rewritten. All this has added to the utility of the book. This edition embodies the latest researches in the field of law in various parts of the world. It is hoped that the new edition will be  welcomed by all those for whom it is meant.