Gas separation fundamentals, G.G.Haselden; gas separation by distillation, M.J.Lockett; advances in cryogenic air separation, T.D.Atkinson and T.Rathbone; gas separation by distillation, K.E.Porter; membrane structure and gas separation, V.T.Stannett and R.T.Chern; the perselectivity of polyorganosiloxanes containing specific functionalities, A.J.Ashworth et al; the ultra-high purity challenge, W.H.Whitlock; the industrial practice of adsorption, G.K.Pearce; the origins of photoelectrochemistry, M.D.Archer; Birmingham and the beginnings of industrial metallurgy, G.F.Williams; oxygen and the tin can, M.Clarke; electrochemical corrosion and boiler explosions in the 19th century, C.A.Smith; a scientist's view of religion, Reverend Dr.John Polkinghorne; upgrading of landfill gas by membranes - process design and costs, comparison with alternatives, R.Rautenbach and H.E.Ehresmann; adsorbent materials - their structure, properties and characterization, L.V.C.Rees; dynamic modelling of pressure swing adsorption separation processes, D.M.Ruthven; the bed dynamics of pressure swing adsorption, C.N.Kenney; isotope separation in the nuclear power industry, C.Whitehead; process intensification - a rotary seawater deaerator, V.Balasundaram; the role of absorption in gas separation, Q.M.Siddique; gas separations through reactions, M.M.Sharma and A.Mehra; the removal of sulphur dioxide from flue gases, W.S.Kyte.