Abstract Water-distilled oil from the dried leaves of two trees of Eucalyptus camaldulensis Dehn. of different ages, were analyzed by GC/MS. The principal constituent, in the 4-year-old tree oil and the 11-year-old tree oil, was 1,8-cineole (40.0%, 37.1%, respectively). Other major constituents were: Î²-pinene (9.2%, 0.1%), Î³-terpinene (5.3%,10.4%), p-cymene (4.7%, 11.6%), terpinen-4-ol (2.8%, 5.5%) and globulol (5.4%, 9.6%).