EUPATORIUM PERFOLIATUM. 39 



of iron, gelatin, and a number of other re- 

 agents were tried, but without causing any 

 evident alteration. 



OBSERVATIONS 



THE EXPERIMENTS. 



From the introductory remarks, preceding 

 the experiments, it will be perceived, that a 

 great part of the virtues of the eupatorium 

 perfoliatum are readily obtained by means of 

 a simple decoction. Were we to judge from 

 the colour produced from a decoction of each 

 part, we might conclude that the root possess- 

 ed the most active properties ; but from the 

 bitter taste, and from other circumstances, 

 hereafter to be mentioned, as deduced from 

 the experiments, it is abundantly evident, that 



