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above-described above-mentioned acetic anhydride acetyl acetyl derivative acidified alcoholic extract ammonia amorphous amygdalin anhydrous aqueous liquid arsenate bark boiling butyric acids cent CH₂ CHEMICAL EXAMINATION CHEMICAL RESEARCH LABORATORIES chloride chloroform CO₂ color colourless compound concentrated constituents contained 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 extracted with ether Fehling's solution filtered filtrate following result formula fraction glucoside grammes grams H₂O heated hydrolysis insoluble isolated latter light petroleum material melting point mixture myristicin nutmeg obtained oil of nutmeg oily Pharm Pharmacopoeia phytosterol portion potassium hydroxide precipitate quinine reaction readily soluble requires resin 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 washed WELLCOME CHEMICAL RESEARCH yellow yielded