ERUPTIVE FEVERS. 



fever which I have seen (and in the course of forty years I 

 have seen it six or seven times prevailing as an epidemic in 

 Scotland), the disease, in almost all the persons affected, was at- 

 tended with an ulcerous sore throat, or was what Sauvages 

 names the Scarlatina anginosa ; and although, in some in- 

 stances, the ulcers of the throat were of a putrid and gangre- 

 nous kind, and at the same time the disease in all its symptoms 

 resembled very exactly the Cynanche maligna ; yet I am still 

 persuaded, that not only the Scarlatina of Sydenham, but that 

 even the Scarlatina anginosa of Sauvages, is a different disease 

 from the Cynanche maligna ; and I have formed this opinion 

 from the following considerations : 



DCLIV. First, There is a scarlet fever entirely free from 

 any affection of the throat, which sometimes prevails as an epi- 

 demic ; and therefore there is a specific contagion producing a 

 scarlet eruption without any determination to the throat. 



Secondly, The Scarlatina, which, from its matter being gen- 

 erally determined to the throat, may be properly termed An- 

 ginosa, has, in many cases of the same epidemic, been without 

 any affection of the throat ; and therefore contagion may be 

 supposed to be more especially determined to produce the erup- 

 tion only. 



Thirdly, Though in all the epidemics that I could allege to 

 be those of the scarlatina anginosa, there have been some cases 

 which, in the nature of the ulcers, and in other circumstances, 

 exactly resembled the cases of the cynanche maligna ; yet I have 

 as constantly remarked, that these cases have not been above one 

 or two in a hundred, while the rest have all of them been with 

 ulcers of a benign kind, and with circumstances hereafter to 

 be described, somewhat different from those of the Cynanche 

 maligna. 



Fourthly, On the other hand, as I have two or three 

 times seen the Cynanche maligna epidemically prevailing ; so, 

 among the persons affected, I have seen instances of cases as 

 mild as those of the Scarlatina anginosa usually are ; but here 

 the proportion was reversed ; and these mild cases were not 

 one-fifth of the whole, while the rest were of the putrid and 

 malignant kind. 



Lastly, It applies to the same purpose to observe, that, of 



