36 EUPATORIUM PERF OLIATUM, 
tially subsided in a short time.—In distillation, 
water came over very slightly affected with the 
sensible qualities of the plant, and not alterable 
by sulphate of iron. 
A dissertation of merit on this plant was pub- 
lished a few years since by Dr. Anderson of New 
York, in which he gives the details of numerous 
and elaborate chemical trials, made by him on dif- 
ferent parts of the plant. He concludes, among 
_ other things, from his experiments, that the ae- 
tive properties of the plant reside in greatest 
quantity in the leaves, and that its virtues are 
readily obtained by means of a simple decoction. 
The medical powers of Eupatorium are such 
as its sensible properties would seem to indicate, 
those of a tonic stimulant. Given in moderate 
quantities, either in substance or in cold infusion 
or decoction, it promotes digestion, strengthens 
the viscera, and restores tone to the system. Like 
other vegetable bitters, if given in large quantities, 
especially in warm infusion or decoction, it 
proves emetic, sudorific, and aperient, Even in 
cold infusion it tends to bring on diaphoresis, 
This plant has been long in use in different 
parts of the United States, for the same purposes 
for which the Peruvian bark, Gentian, Chamomile, 
&c. areemployed. It has been found competent 
