Several low molecular weight components have been isolated from the steam distillable oils of dark tobaccos. Both dark air-cured and fire-cured types have been examined. Chromatographic fractionation followed by glc-ms analysis was used to identify the constituents. A number of aromatic compounds were identified including naphthalene, alkyl naphthalene, anthracene and flourene. Several phenolic compounds were found in the dark tobacco; ethyl-, dimethyl-, trimethyl- and isopropyl-phenol, 2, 4-dihydroacetophenone, metoxyphenol, dimethyl-resorcinol and 2,6-d-tert-buty 1-4-methyl-phenol. Many of the phenols were found to exist as isomers. Several of the isoprenoids found in burley tobacco have been identified in dark tobacco including neophytadiene, solanone, linalool, 6-methyl-5-hepten-2-one, 2,2,6-trimethyl-cyclohexane-1,4 dione, damascenone, B-ionone, thymol, ionene, tetrahydro-actinidiolide, isoeugenol and four isomers of the megastigmatrienones which occured in a ratio of 3.0:6.0:1.0:3.5. Many of these isoprenoids contribute to the flavor and aroma of dark tobacco. The effect of curing methods on these constituents will be discussed. For this part of the study the same cultivars were fire-cured and air-cured.