100 On the Use of 



N. B. The remainder of this paper, with addi- 

 tional observations, will be published in a future 

 number of the Journal. 



XVI. On the Use of the Prinos verticillatus, or Black- 

 Alder, in Intermittent- Fevers, and other diseases. 

 In a letter to the Editor, from Dr. Amos Gregg, 

 Jim., of Bristol, in Pennsylvania. 



Dear Sir, 



SHOULD the following observations on the 

 use of the Prinos verticillatus be deemed worthy of a 

 place in your Journal, they are at your service. 



" The natural infirmities of mankind, and, perhaps, 

 especially the vices to which civilized nations are so 

 propense, will always render Tonics most necessary 

 implements in the hands of physicians." No person 

 doubts the indispensible necessity of this class of me- 

 dicines. 



From the sensible qualities of the Prinos, but more 

 particularly from what you have said (in your Collec- 

 tions*), I was induced to give the vegetable a trial 

 in disease. My experience is confined to its use in 

 remitting and intermitting fevers ; and it was the 

 bark alone which I used. 



September 4th, 1804. The first case was that of a 

 boy, aged fourteen, in remitting fever. Four days 



" Part Second. Pages 5 and 6. 



