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above-described above-mentioned acetic anhydride acetyl acetyl derivative acidified alcoholic extract alcoholic solution ammonia amorphous amygdalin anhydrous aqueous liquid bark boiling butyric acids cent Chemical Research Laboratories chloride chloroform color colourless compound concentrated consisted constituents contained cooling crystalline substance crystals described dilute alcohol diminished pressure distillation flask distilled under diminished distilled with steam dried elaterin essential oil ether extract ether removed ethereal liquid ethereal solution ethyl acetate evaporated extracted with ether Fehling's solution filtered filtrate following result formula fraction glucoside grammes grams heated hydrolysis insoluble isolated latter light petroleum material melting point mixture myristicin needles nutmeg obtained oil of nutmeg oily Pharm Pharmacopoeia phytosterol portion potassium hydroxide precipitate prepared quinine readily soluble requires resin rotatory power salt gave separated shaken small amount small quantity sodium carbonate sodium hydroxide solid solution of sodium solvent removed Soxhlet apparatus sparingly soluble sulphuric acid tropine tube umbellulone volatile Wellcome Chemical Research yellow yielded