SUMMARY Wood properties of Eucalyptus urophylla and two varieties of Leucaena leucocephala (vars. K8 and K72), were analyzed at the wood laboratory of the Companhia Vale do Rio Doce forest reserve of Linhares in Espirito Santo, Brazil. The material was collected from a species mixture experiment which was clear felled at age 7 years. As the two major end uses for wood in the region are pulp and charcoal, the wood properties were analyzed in two groups: (a) physical and chemical properties of the wood; (b) conversion yields and properties of charcoal. There were no significant differences in wood properties between trees of a given species or variety grown in pure stands and mixtures. The only significant differences observed were between eucalypt and leucaena wood. Eucalypt wood had a lower basic density and higher moisture content than that of leucaena. Eucalypt wood had less ash and extractives but a higher lignin content and there were no significant differences in holocellulose content. The percentage...