PRACTICE OF PHYSIC. 



period of the disease, cold air may be applied with safety, we 

 are yet uncertain. Analogy, though so often the resource of 

 physicians, is in general fallacious ; and further, though the 

 analogy with the smallpox might lead to the application of cold 

 air during the eruptive fever of the measles, the analogy with 

 catarrh seems to be against the practice. After the eruption 

 had appeared upon the skin, we have had many instances of 

 cold air making it disappear, and thereby producing much dis- 

 order in the system ; and we have also had frequent examples of 

 such disorder being removed by restoring the heat of the body, 

 and thereby again bringing forth the eruption. 



CHAP. IV. OF THE SCARLET FEVER. 



DCLI. It may be doubted if the scarlet fever be a disease 

 specifically different from theCynanche maligna above described. 

 The latter is almost always attended with a scarlet eruption ; 

 and, in all the instances I have seen of what may be called the 

 scarlet fever, the disease, in almost every person affected, has 

 been attended with an ulcerous sore throat. 



DCLII. This view of the matter may create some doubt ; 

 but I am still of opinion, that there is a scarlet fever which is 

 a disease specifically different from the Cynanche maligna. 



Dr. Sydenham has described a scarlet fever, which he had 

 seen prevailing as an epidemic, with all the circumstances of the 

 fever and eruption, without its being accompanied with any af- 

 fection of the throat ; at least he does not take notice of any 

 such affection, which such an accurate observer could not fail to 

 have done, if any such symptom, as we have commonly seen 

 making a principal part of the disease, had attended those 

 cases which he had observed. Several other writers have des- 

 cribed the scarlet fever in the same manner, and I know physi- 

 cians who have seen the disease in that form ; so that there can 

 be no doubt of there being a scarlet fever not necessarily con- 

 nected with an ulcerous sore throat, and therefore a disease dif- 

 ferent from the Cynanche maligna. 



DC LI II. But, further, although in all the instances of scarlet 



