HJEMOIUUIAGIES. 



233 



ing them upon every repetition is properly practised : but it is 

 a practice of nice and precarious management, and should by 

 no means be trusted to, so far as to supersede the measures pro- 

 posed in DCCCXXV., wherever these can be admitted. 



DCCCXXIX. When the haemorrhagy of the nose happens 

 In consequence of a venous plethora in the vessels of the head, 

 as in DCCLXXII., the flowing of the blood pretty largely 

 may be allowed, especially when it happens after the suppression 

 or ceasing of the menstrual or hsemorrhoidal flux. But, though 

 the flowing of the blood is, on its first occuring, to be allowed, 

 there is nothing more proper than guarding against its returns. 

 This is to be done, not only by the measures proposed in 

 DCCLXXXIII. et seq., but, as the effects of a plethoric 

 state of the vessels of the head are very uncertain, so, upon any 

 appearance of it, and especially upon any threatening of hae- 

 morrhagy, the plethora is to be removed, and the haemorrhagy 

 to be obviated immediately by proper evacuations ; as blood- 

 letting, purging, and issues, or by restoring suppressed evacua- 

 tions, where this can be done. 



CHAP. Ill OF THE HEMOPTYSIS, OR HAEMORR- 

 FROM THE LUNGS. 



SECT. I. OF THE PHENOMENA AND CAUSES OF HEMOPTYSIS. 



DCCCXXX. When, after some affection of the breast, 

 blood is thrown out from the mouth, and is brought out with 

 more or less coughing, there can be no doubt that it comes from 

 the lungs ; and this generally ascertains the disease of which I 

 am now to treat. But there are cases in which the source of 

 the blood spit out is uncertain ; and, therefore, some other con- 

 siderations, to be mentioned hereafter, are often necessary to 

 ascertain the existence of an haemoptysis. 



DCCCXXXI. The blood-vessels of the lungs are more 

 numerous than those of any other part of the body of the same 

 bulk. These vessels, of the largest size, as they arise from the 

 heart, are more immediately than in any other part subdivided 



