This edition has been completely revised to include some 20 per cent of new material. Important recent developments such as the theory of Regge poles are now included in this edition. Many problems with solutions have been added to those already contained in the book.

Devoted to the foundation of mechanics, namely classical Newtonian mechanics, the subject is based mainly on Galileo's principle of relativity and Hamilton's principle of least action. The exposition is simple and leads to the most complete direct means of solving problems in mechanics. The final sections on adiabatic invariants have been revised and augmented. In addition a short biography of L D Landau has been inserted.