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acetic acid acidified with sulphuric Aethusa alcoholic extract alkaline alkaloid aqueous liquid barium salt boiling Botanic Gardens brown Brucea cent chaulmoogric acid Chelsea Physic Garden Chemical Research Laboratories chloride chloroform Codex collected color colourless compound consisted constituents contained crystalline substance crystals dilute diminished pressure dissolved dried eriodictyon ester ether ethereal liquid ethereal solution ethyl acetate evidently examination extracted with ether fatty oil filtered filtrate formic formula fraction fruit gave grams Grindelia heated herbarium homoeriodictyol houses hydrogen hydrolysis isolated ketone lactone latter light petroleum London melting point mixture needles obtained odour officinalis oxidation permanganate Philip Miller phytosterol Pilocarpine Plate portion possessed potassium hydroxide potassium permanganate precipitate prepared removed requires residue resin seeds semicarbazone separated small amount Society of Apothecaries sodium carbonate solid soluble solvent species specimens steam sulphuric acid tion tube umbellulonic acid washed Wellcome Chemical Research whence a]D yellow yielded