H^EMORRHAGIES. 215 



treme vessels more generally, and, according to the different 

 postures of the body, and mode of the effort, into certain vessels 

 more particularly. 



Among the causes increasing the force of the circulation, 

 anger, and other violent active passions are to be reckoned. 



4. The violent exercise of particular parts of the body. If 

 these are already affected with congestions, or liable to them, 

 such exercise may be considered as a stimulus applied to the 

 vessels of that particular part. Thus, any violent exercise of 

 respiration may excite haemoptysis, or occasion its return. 



5. The postures of the body increasing determinations, or 

 ligatures occasioning accumulations of the blood in particular 

 parts of the body. 



6. A determination into certain vessels rendered habitual by 

 the frequent repetition of haemorrhagy from them. 



7- Cold externally applied, as changing the distribution of 

 the blood, and determining it in greater quantity into the inter- 

 nal parts. 



SECT. IV. OF THE CURE OF H.EMORRHAGY. 



DCCLXXVI. Having thus considered the proximate and 

 remote causes of haemorrhagy in general, our next business is, to 

 treat of the cure of the disease in the same manner. 



In entering upon this subject, the first question which pre- 

 sents itself, is, Whether the cure of haemorrhagies ought to be 

 attempted by art, or if they should be left to the conduct of na- 

 ture ? 



DCCLXXVII. The latter opinion was the favourite doctrine 

 of the celebrated Dr. Stahl, and his followers. " I must own 

 that the particular doctrines of the Stahlians are in many re- 

 spects ill-founded : but they have been useful, and they have 

 collected the chief facts which relate to this subject; it is neces- 

 sary to obviate those doctrines in their writings, which I con- 

 sider as in a great measure erroneous," They maintained, that 

 the human body is much disposed to a plethoric state ; ,and, 

 consequently, to many disorders which nature endeavours to 



>viate and relieve by exciting haemorrhagy : that this, there- 

 fore, is often necessary to the balance and health of the system : 



