Wild volatile-oil plants and their economic importance . iefly reported by the writerin 1905 l and The promising preliminary results encourageda further investigation of this plant. During the summers of 1907and 1908 larger quantities of this interesting wild plant were distilled > Rabak, Frank. On Several New Artemsia Oils. Pharmaceutical Review, vol. 23, 1905, pp. 128-129.! Ibid., vol. 24, 1906, pp. WILD SAGE. 23 in South Dakota, a yield of per cent of a very fragrant essential oilbeing obtained from plants which had passed their flowering the plant is d
Wild volatile-oil plants and their economic importance . iefly reported by the writerin 1905 l and The promising preliminary results encourageda further investigation of this plant. During the summers of 1907and 1908 larger quantities of this interesting wild plant were distilled > Rabak, Frank. On Several New Artemsia Oils. Pharmaceutical Review, vol. 23, 1905, pp. 128-129.! Ibid., vol. 24, 1906, pp. WILD SAGE. 23 in South Dakota, a yield of per cent of a very fragrant essential oilbeing obtained from plants which had passed their flowering the plant is distilled during its flowering stage the yield of oilis about per cent. The oil obtained by the distillation of the whole plant was beau-tiful pale green in color, with an agreeable fatty and camphoraceousodor and a slightly bitter camphorlike taste. The specific gravityof the oil at 24° was ; specific rotation AD=°; re-frac-tion ND24°, The oil was soluble in 1 volume of 80 per centalcohol, becoming turbid in 2 volumes or Fig. 4.—A field of wild sage npar Webster, S. Dak. SEPARATION OF STEAROPTENE. During the distillation and filtration of the oil, small crystals wereobserved at the mouth of the distillation apparatus and also at themouth of the funnel after standing over night. In order to separatethis stearoptene (solid portion of the oil) from the elaoptene (liquidportion) 50 grams of the oil were subjected to a freezing mixture ofice and salt for several hours. As a result crystals separated in theform of white flakes. The crystals were thrown into a force filterand weighed, a total of 3 per cent resulting. IDENTIFICATION OF CRYSTALLINE COMPOUND. After recrystallization of the above crystals from alcohol the prop-erties of the crystals compared very favorably with levo borneol, assi town in Table III. 235 24 WILD VOLATILE-OIL PLANTS. Table III.—Comparison of properties of crystals from oil of wild sage and of pure borneol. Test. Crystals
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