446 PRACTICE OF PHYSIC. 



cessary to distinguish between the symptomatic and idiopathic 

 affections ; that is, between those difficulties of breathing which 

 are symptoms only of a more general affection, or of a disease 

 subsisting primarily in other parts than the organs of respira- 

 tion, and that difficulty of breathing which depends upon a pri- 

 mary affection of the lungs themselves. The various cases of 

 symptomatic dyspnoea I have taken pains to enumerate in my 

 Methodical Nosology ; and it will be obvious they are such as 

 cannot be taken notice of here. 



MCCCLXVIII. In my Nosology I have also taken pains to 

 point out and enumerate the proper, or at least the greater part of 

 the proper idiopathic cases of dyspnoea; but, from that enumera- 

 tion, it will, I think, readily appear, that few, and indeed hardly 

 any, of these cases, will admit or require much of our notice in 

 this place. 



MCCCLXIX. TheDyspncea sicca, species 2. ; the Dysp- 

 noea aerea, sp. 3. ; the Dyspnoea terrea, sp. 4. ; and 

 Dyspnoea thoracica, sp. 7-? are some of them with difficulty 

 known, and are all of them diseases which, in my opinion, do not 

 admit of cure. All, therefore, that can be said concerning them 

 here is, that they may admit of some palliation ; and this, I 

 think, is to be obtained chiefly by avoiding a plethoric state 

 of the lungs, and every circumstance that may hurry respira- 

 tion. 



MCCCLXX. Of the Dyspnoea extrinseca, sp. 8., I can 

 say no more, but that those external causes marked in the Nos- 

 ology, and perhaps some others that might have like effects, are 

 to be carefully avoided ; or, when they have been applied, and 

 their effects have taken place, the disease is to be palliated by 

 the means mentioned in the last paragraph. 



MCCCLXXI. The other species, though enumerated as 

 idiopathic, can hardly be considered as such, or as requiring to 

 be treated of here. 



The Dyspncea catarrhalis, sp. 1., may be considered as a 

 species of catarrh, and is pretty certainly to be cured by the 

 same remedies as that species of catarrh which depends rather 

 upon the increased afflux of mucus to the bronchiae, than upon 

 any inflammatory state in them. 



The Dyspnoaa aquosa, sp. 5., is certainly to be considered 



