36 DISSERTATION ON THE 



EXPERIMENT XXII. 



The alcoholic infusion of the leaves was of a 

 brown colour, and like that obtained from the 

 flowers, was of a bitter taste and aromatic 

 flavour. With re-agents this infusion exhibit- 

 ed the following appearances : carbonate of 

 potash formed a dark brown precipitate ; 

 tartarised antimony produced a brownish 

 precipitate; nitrate of silver caused a light 

 colour; with the acetate of lead an ochre 

 yellow precipitate was formed ; nitrate of 

 mercury occasioned an olive green precipi- 

 tate ; barytic water also formed an olive 

 green ; muriate of mercury caused a slight 

 precipitate ; a light green colour was induced 

 by nitrate of copper ; pure potash created a 

 brown colour ; oxalate of ammonia produced 

 a white precipitate ; with gelatin a precipitate 

 was formed ; a solution of sulphate of iron, 

 litmus, and distilled water, produced effects 

 similar to the same re-agents, in experiment 

 the twenty-first 



