The Royal Society's south-east Asian rain forest research programme - an introduction, A.G. Marshall; forest land-use in Sabah - an introduction to the Danum Valley, C.W. Marsh and A.G. Creer; primary lowland dipterocarp forest at Danum Valley, Sabah, Malaysia - structure relative abundance and family composition, D. McG. Newbery, et al; germination and growth of colonizing species in artificial gaps of different sizes in dipterocarp rain forest, D.N. Kennedy and M.D. Swaine; do dipterocarp seedlings really partition rain forest gaps?, N.D. Brown and T.C. Whitmore; the role of mycorrhizas in the regeneration of some Malaysian forest trees, I. Alexander, et al; throughfall, stemfloow, overland flow and throughflow in the Ulu Segama rain forest, Sabah, W. Sinun, et al; the impact of selective commercial logging on stream hydrology, chemistry and sediment loads in the Ulu Segama rain forest, Sabah, I. Douglas, et al; litterfall, leaf litter decomposition and litter invertebrates in primary and selectively logged dipterocarp forest in Sabah, East Malaysia, T. Burghouts, et al; fruiting phenology and the survival of insect fruit predators - a case study from the south-east Asian dipterocarpaceae, R.J. Toy, et al; the response of some rain forest insect groups to logging and conversion to plantation, J.D. Holloway, et al; vertebrate responses to selective logging - implications for the design of logging systems, A.D. Johns; the consequence of selective logging for Bornean lowland forest birds, F.R. Lambert.