EUPATORIUM PERFOLIATUM. 19 



of witnessing its effects, will be considered 

 in a subsequent part of this dissertation. 



EXPERIMENTS. 



Decoctions were made of the flowers, 

 leaves, and roots: to an ounce of each of 

 these parts of the plant, bruised and put in 

 separate glass vessels, was added one pint of 

 distilled water. After having been subjected 

 to the heat of a sand-bath, and boiled for one 

 hour, it was filtered through paper. The 

 decoction of the leaves had the least colour ; 

 that of the flowers was somewhat darker; 

 that of the roots presented the darkest co- 

 lour. They all exhibited shades of brown. 

 To the taste they were bitter; but this sen- 

 sation was most produced from the leaves, 

 and least from the root. 



