EUPATORIUM PERFOLIATUM. 37 



EXPERIMENT XXIII. 



The alcoholic infusion of the root also ac- 

 quired a dark colour, but did not possess the 

 bitter taste nor aromatic flavour. It produced 

 the following effects : with carbonate of pot- 

 ash a copious dark precipitate was formed; 

 the acetate of lead caused a slight brown 

 precipitate; the infusion of litmus, sulphate 

 of iron, nitrate of lead, barytic water, and 

 tartarised antimony effected changes similar 

 to those detailed in experiment the tw enty- 

 first. 



EXPERIMENT XXIV. 



A portion of the alcoholic infusion of expe- 

 riment the twenty-second was distilled. It was 

 of a very clear appearance ; had no aromatic 

 smell nor bitter taste ; an infusion of litmus, 

 a solution of the sulphate of iron, and a num- 

 ber of other re-agents were tried, without 

 producing any change. 

 6 



