Aspects of the life and work of James Clerk Maxwell, by J. Randall.--Field theory since Maxwell, by R.E. Peierls.--Interatomic forces, by C.A. Coulson.-- Radio and the ionosphere, by E.V. Appleton.-- Radio astronomy and giant telescopes, by E.G. Bowen.--Stimulated emission of radiation and its practical application to masers and lasers, by R.A. Smith