.^ 'TPje Jrt of Fa r r i e r y 



AiKiir, which is of fuch Importance in the Art oi 

 Healing, we are to remember, firil, f^at e^vety 

 Body jiriking againji another, and communuat- 

 ing Part of its Motion thereunto, iofes fo much 

 of its c<wn Motion, or is fo much retarded: Where- 

 fore, the Blood thrown out of the Heart, while 

 it llrikes upon the antecedent Blood, and drives 

 it forwards, transfers to it Part of its own 

 Motion, or Iofes fo much of it, as is acquired by 

 the antecedent Blood. Yet, in order to a thorough 

 Knowledge of the Matter I am difcourfmg of, it is 

 abfolutely neceffary a Man fhould underftand Angi- 

 ology, or the Anatomy of the Veins and Arteries. 

 However, I lay it down in general, as good Pra- 

 ctice, to bleed on the contrary Side to the Part af- 

 fefted ; becaufe the remaining Blood will circulate 

 failer, and have more Room to do fo, and thereby 

 the ftagnating Blood (which occafions a Tumour ei- 

 ther outwardly or inwardly) will in all Probability 

 difperfe. But on the other hand we mull confider, 

 whether the Part affedled be fupplied with Blood, 

 from the afcending or defcending Trunk of the A- 

 crta or great Artery arifmg out of the Heart. For, 

 fuppofe the Tumour or Swelling, which we would 

 difperfe by Bleeding, lies upon the Glands or Muf- 

 cles of the Throat, we are not to bleed in the Tail 

 .,.,_or Thigh Veins, thinking this the moil likely, be- 

 caufe it is the common Method ; no, the Parts a- 

 bove the Heart towards the Head, are fed and fup- 

 plied with Blood from the afcending Trunk of the 

 large Artery ; as thole below the Heart or towards 

 the Tail, are by the defcending Trunk of the fame. 

 Reviilfion Therefore, if we bleed in the Thigh for a Swelling 

 explained. -^^ the Neck, we caufe the Blood in the defcending 

 Trunk of the Aorta or great Artery to move fail- 

 er, and of confequence the Fluid in the afcending 

 Trunk, miiil move flower : For as m.uch as that a 

 Supply will be wanted in the Veflel, which is run- 

 ning off its Contents ; and therefore, the left Ven- 

 tricle of the Heart, will not contain much more 



Blood, 



