SECT. XXVII. i. i. OF HAEMORRHAGES. 229 



SECT. XXVII. 



OF HAEMORRHAGES. 



I. The veins are abforbent vejfels. I. Hemorrhages from inflam- 

 mation. Cafe oj hemorrhage from the kidney cured by cold bathing. 

 Cafe of hemorrhage from the nofe cured by cold immerjion. II. 

 Hemorrhage from venous paralyfis. Of Piles. Black fools. 

 Petechie Confumption. Scurvy of the lungs. Blacknefs of the 

 face and eyes in epileptic Jits. Cure of hemorrhages from venous 

 Inability. 



I. As the imbibing mouths of the abforbent fyftem already 

 defcribed open on the furface, and into the larger cavities of the 

 body, fo there is another fyftem of abforbent veflels, which arc 

 not commonly efteemed fuch, I mean the veins, which take up 

 the blood from the various glands and capillaries, after their prop- 

 er fluids or fecretions have been feparated from it. 



The veins refemble the other abforbent veflels ; as the progref- 

 fion of their contents is carried on in the fame manner in both, 

 they alike abforb their appropriated fluids, and have valves to 

 prevent its regurgitation by the accidents of mechanical vio- 

 lence. This appears firft, becaufe there is no pulfation in the 

 very beginnings of the veins, as is feen by microfcopes ; which 

 mull happen, if the blood was carried into them by the actions 

 of the arteries. For though the concurrence of various venous 

 flreams of blood from different diftances muft prevent any pul- 

 fation in the larger branches, yet in the very beginnings of all 

 thefe branches aFpulfation muft unavoidably exift, if the circula- 

 tion in them was owing to the intermitted force of the arteries, 

 Secondly, the venous abforption of blood from the penis, and 

 from the teats of female animals after their erection, is ftill more 

 fimilar to the lymphatic abforption, as it is previoufly poured in- 

 to cells, where all arterial impulfe muft ceafe, 



There is an experiment, which feems to evince this venous 

 abforption, which confifts in the external application of a ftimu- 

 lus to the lips, as of vinegar, by which they become inftantly 

 pale ; that is, the bibulous mouths of the veins by this ftimulus 

 are excited to abforb the blood fafter, than it can be fupplied by 

 the ufual arterial exertion. See Seel. XXIII. 5. 



i. There are two kinds of haemorrhages frequent in difeafes, 

 one is where the glandular or capillary action is too powerfully ex- 

 erted, and propels the blood forwards more haftily, than the 

 veins can abforb it ; and the other is, where the abforbent pow- 

 er 



