104 



DICTIONAIIY OF Tllli ACJTIVK I'lUNCIPLKS OK PLANTS. 



also an alkaloid crystallizing in blood-red needles ; soluble in water 

 and forming yellow salts ; further, a crystalline substance, CmHioOj, 

 resembling Culjebin. Some varieties of Xanthoxylou contain Berberine 

 (see Berberis). 



((() ARTARINE A., CojHoaNOj (P. Giacoaa) ; rose-gray amorphous 

 powder; becomes brown at 210", then melts at 240' with decomposition ; 

 bitter taste. Salts golden yellow. Hydrochloride precipitated by ether 

 from alcoholic solution. Free acids diminish the solubility of the salts. 



Soluble in ether, boiling amyl alcohol, and warm acetone; with diffi- 

 culty in warm chloroform, sparingly in boiling 98 per cent, alcohol ; 



warm methyl alcohol dissolves it if the base be freshly precipitated. 

 Insoluble in water or benzene. 



Precipitants : [Phospho-antimonic acid, slight pp., soluble in excess.] 

 Bisiniith-potast-ic iodide, red flocculent pp , insoluble in excess. 



a m umpo ■is.sic io( i e / ..gji^^ flocculent pp., insoluble in excess. 

 JVlerciiric-potassic lodiue \ ■' "^"^ ' 



Chlorine water fto hydrochloride), yellow tinge ; colourless on 

 addition of ammonia. 

 Concentrated sulphuric acid, colourless. 

 Nitre added to the solution in sulphuric acid, blood-red. 



