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acetic acid acetic anhydride acetone alkali anhydrous antimony antimonyl tartrate aqueous solution arsenic ascaridole barium betonicine c.c. of water Calc cent Chem CHEMICAL RESEARCH LABORATORIES chloroform colour colourless compounds concentrated corr crystallisation crystallises from water dilute dissolved distilled dried material ester ether ethyl acetate evaporated to dryness extracted fagaramide filtrate formed formerly USA Found fraction glyoxaline grams grams of sodium H₂O heated hydrated hydrochloric acid hydrogen chloride hyenanchin hypophosphorous acid insoluble isolated l-hyoscine loss at 110 MADISON THE WELLCOME melting point methyl alcohol mixture molecules of water obtained oxidation permanganate picrate picric acid potassium powder precipitate prepared quantity reaction readily soluble reduction requires RESEARCH LABORATORIES Henry residue ROBERT GEORGE FARGHER salvarsan separated silver nitrate Snow Hill LONDON sodium carbonate sodium hydroxide sodium hyposulphite soluble in water solvent sparingly soluble substance sulphuric acid terpene turicine vacuum water of crystallisation WELLCOME CHEMICAL RESEARCH Wellcome-British whilst