104 CULPEPER’s ENGLISH: PHYSICIAN, 
matory fevers on taking cold: ‘The blood is found to confift chiefly of phlegm, as 
the bafis or vehicle; for, from the beft experiments it appears, that in feven ourices 
of human blood, there are five ounces two drachms of phlegm, three drachms ofa 
- fabtile fpirituous oil, a fmall quantity of a thicker oil, two drachms of falt, and about. 
~ two of earth. From thefe conftituent parts of the blood, varioufly combined and 
diftributed by the circulatory motion impreffed by the heart, and by the ofcillatory 
_ expanfive motion of the interfperfed air, and the re-aGtion of the contraGtile veffels, 
flow all the properties and operations of the blood. From this mixture of elements, 
and their lax compofition, it becomes fufceptible of various alterations and impref- 
' fions; the principal'whereof are, coagulation, which ufually attends it out of the 
body, fometimes in it, and fcarce ever without an artificial procurement, but always 
mortal: and diffolution, which is juft oppofite to the former, and confifts in fuch a 
communition of the fibrous parts of the blood as indifpofes it for a feparation ‘of the 
cruor from the ferum. This is frequently the confequence of malignant and Spi 
lential fevers, 8¢c. and is likewife occafioned by fome kinds of poifons. 
. The circulation of the vital blood is performed through the arteries: andits ani 
is from the heart towards the extremes of the body: and’this from every part of 
.  the-body, internal and external; ftill out of a wider part into’a narrower, out of the - 
trunk into the branches. And it is on this principle alone, that all the blood 
may be detived into an artery, and evacuated at it. For it is evident, that all the 
arteries of the body are continually bringing the blood from the left part of the 
heart, ‘through the trunks of the arteries, into the branches; and on the: contrary, 
that all the veins, éxcepting the porta, are perpetually bringing back the blood from 
the extreme parts into the heart. The blood béing arrived here, its motion or cit: 
culation is continued ‘as follows. The auricles of the heart, being large hollow mul 
cles, are furnifhed with a double feries of ftrong fibres proceeding with a contrary 
. dire&tion to two oppofite tendons, the one adhering to the'right ventricle, the other 
to'the finus venofus: as alfo with innumerable veins and arteries; by the contractile 
ree Fthefe auricles, the blood is vigoroufly expreffed, ‘and driven into the right 
tr cle; which, upon this contra@tion, is rendered flaccid, empty, and di t 
to adm tit. Tf now the right ventricle, thus ‘full of blood, by the contraétion of 
bres prefs the blood towards the aperture again, venous blood, at the fame time 
‘otitog in, will drive it back again into the cavity and mix it more intimate 5 
‘rifing up againft the parietes, i it raifes the valvulz tricufpides, which are fo come ; 
ed to. the flefhy columns extended on the oppofite fide, as that when laid quite io' 
“they cannot clofe the parietes of the right ventricle : thefe it thrufts towards the right 
‘auricle, till being there tif ftop the  paffage very Clofely, and prevent an 
veturn, “By the fame means nar’ 
ans: a 
