EUPATORIUM PERFOLIATUM. 47 



pure water was ascertained to be in tlie re- 

 ceiver. The rennaining portion being distilled 

 over into other receivers, I employed the 

 usual re-agents. This last product, obtained 

 from the distilled infusion of the tiowers, 

 showed a free acid; that it was not the gallic 

 acid was certain from the inaction of the sul- 

 phate of iron : of its being the acetic acid, 

 there could be little doubt, both on account 

 of the difficulty with which it was volatilized, 

 and from the result of experiment twentieth. 

 On experiments fifteenth and sixteenth it is 

 unnecessary to make any particular remarks. 



From experiment the seventeenth, a dry 

 extractive matter, similar to that obtained 

 from the decoction, was produced. From 

 the operation of the caustic soda we infer the 

 existence of azote. Experiments eighteenth 

 and nineteenth tend to corroborate the results 

 of the fourteenth, fifteenth, sixteenth, and 

 twentieth experiments. From the nineteenth 

 experiment acetic acid was produced, which 

 was probably modified by the presence of oil. 



