This series was established in 1952 as medium for the publication of major new works of scholarship on all aspects of theoretical and applied mechanics. From its inception it has maintained a reputation for the publication of outstanding monographs, a number of which have been re-issued in paperback. The series covers such areas as wave propagation, fluid dynamics, theoretical geophysics, combustion and the mechanics of solids. Authors are encouraged to write for a wide audience, and to balance mathematical analysis with physical interpretation and experimental data, where appropriate. Whilst the research literature is expected to be a major source for the content of the book, authors should aim to synthesise new results rather than just survey them.