Facts relative to Cynanche Trachealis. 243 



Query 1. Is the disease [Angina Membranosa] more 

 common m your part of Virginia than formerly? 



With the exceptions of 1799 and the two succeeding 

 years, it has, to the best of my recollection, undergone 

 but little variation, with regard to the degree of its pre- 

 valence, for the last twenty-live years. 



Query 2. Was it common when the oldest physician 

 settled in and about Alexandria? 



I have reason to believe it was. I had frequent con- 

 ferences with Dr. William Brown, who had been 

 many years a practitioner in this part of the world, when 

 I commenced the practice of medicine ; and from him I 

 was led to consider it as a disease well known, for the 

 defiance which it too often bade to the most approved 

 rules of practice. 



Query 3. In what situations has it most common!*, 

 prevailed, in the dry or the wetter soils? 



I am not able to speak decisively with regard to this 

 enquiry, having never permitted myself to engage ex- 

 tensively in country practice ; I am, however, disposed 

 to believe, from such information as I possess, that nei- 

 ther the nature of the soil, its lowness or elevation, have 

 much influence in the production of the disease. 



Query 4. Answered by the foregoing. 



Qucrf 5. At what season has it prevailed most ? 



