American journal of pharmacy . t. The same reagents were also applied tothe alcohol alone, used for digesting, without showing any presence of a small percentage of tannin was thereforedetermined. The residue of the drug left in the experiment mentioned above,after treating the Aralia with absolute alcohol, was washed thor-oughly with more absolute alcohol, dried, and then digested twenty-four hours in cold water. The aqueous liquid alter filtration wa.^ of 540 A ralia Nudicaiilis. Am. Tour, , 1897. brown color. Upon application of heat it reduced Fehlings solutionand
American journal of pharmacy . t. The same reagents were also applied tothe alcohol alone, used for digesting, without showing any presence of a small percentage of tannin was thereforedetermined. The residue of the drug left in the experiment mentioned above,after treating the Aralia with absolute alcohol, was washed thor-oughly with more absolute alcohol, dried, and then digested twenty-four hours in cold water. The aqueous liquid alter filtration wa.^ of 540 A ralia Nudicaiilis. Am. Tour, , 1897. brown color. Upon application of heat it reduced Fehlings solutionand precipitated with a solution of basic acetate of lead, with asolution of borax, with alcohol, and with ether. With a solution offerric chloride in the cold it caused no precipitate. The presenceof mucilaginous matter was thus shown. As the next experiment, a sample of coarsely cut Aralia nudi-caulis was distilled with steam, the distillate showing the presenceof an agreeable-smelling volatile oil. The liquid comes over milky,. Fig. ^.—Entire rhizome, segment, cross-section. A, pitted vessels ; B, lignified cells ; D, cork cells ; E, medullary rays ; E^medullary rays, prolonged into bark ; F, cambium layer ; G, resin and oil cells ;Hy phellogen ; D to F, bark ; Fto /, wood ; I\.o K, pith. and oily globules soon collect, floating upon the surface. Themicroscopical examination had already revealed that this oil residesin the bark of the rhizome, and upon distilling some of the freshbark alone, without the wood and pith of the rhizome, quite appre-ciable quantities of oil were found. Whether the rhizome gathered in the fall contains more or less ^ociXr!m-r} ^raiia Nudicaulis. 541 volatile oil than the spring drug has not been determined; ourimpression, based on the odor and taste of the samples of variousseasons, is, however, that the oil is more abundant in the fall thanin the spring. In working with the fresh bark alone the distillatebecame more milky and the oil-drops solidif
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