Photoelectron Spectroscopy By A.Hamnett and A.F.Orchard…1 Electronic Spectra By P.Day and N.Sanders…64 Optical Activity By R.G.Denning…139 MagneticSusceptibility Measurements By P.A.Cox…162 Theoretical Calculations By A.Hamnett, P.A.Cox, and A. F. Orchard…185