HEMORRHAGE. 
{carlet igs and gufhes from the veflel per faltum, and 
with great rapidity. The blood iffues from a vein in 
an even, iveken ftream, and is of a dark purple red 
colour. 
In confequence of the greater celerity, with ‘which ‘the 
blood flows a oa arteries, their wounds are, gene 
fpeaking, much more dangerous than thofe of the ae 
being far more difficult to heal, and attended with m 
ater hemorrhage. Befides, experience fhews, that ee 
conftitution cannot bear the lofs of fo much arterial as it can 
of venous blood; and though it will often bear the lofs of a 
large quantity, either of arterial or venous blood, provided 
Such quantity is et Sexiy and y> yet it is found, 
t when a of blood is loft in the fudden way, 
as it often is in ge of the large arteries, the con. 
fequences are generally foon fatal. Even when the patient 
furvives the immediate effe€ts of a confiderable and fudden 
hemorrhage from an artery, it too frequently happens, that 
the weaknefs induced does not quickly go off, but lafts an 
immoderate time, and becomes the foundation of obftinate 
and fatal difeafes. 
The contraétion of the ventricles of the heart drives the 
blood into all the arteries of the 
rning arteries, for the purpofes of fecretion 
and nutrition. Hence, it muft be plain, that the current “d 
the blood i is in a direction leading from 
the arteries 
heart, while that of the blood in the veins runs towards this 
important organ. It muft be equally manifeft, that Sos 
fure, made on that portion of a wounded arte artery, which ad- 
joins the wound towards the heart, will tend to ftop the 
bleeding ; and that, in order to check any hemorrhage from 
avein, the preflure or impediment to the bleeding muft be 
applied: to to that of the wound which is moft remote from 
‘The wounds af certain blood-veffels, pasticnterty of fome more 
circulati 
near the fource of the 
aorta or vena or, of the pulmo artery, or veins 
of oa gies ctor ternal jugular vein, &c. are fatal. The 
goes o oof | the heart in Ping la e trunks of the 
serie fs 
s, and their “opens he are as el Pets as 3 if the tn 
rele were ee 
dreffin 
tient would 
ere an ope- 
a a tu- 
as they ar 
ibesepianee before the Song 
bese or coats, 
‘The internal « 
in the longitudinal di 
“ie free the eh 
as to be very eafily womb the ight : 
© 
Rare is divifible their 
Wickes 
t force applied in that : 
The middle coat is the thickeft, gonfifting of circular 
layers of fibres, refembling thofe of mufcles, but differing 
from them in poffeffin 
It is this coat which kee 
and of around form. 
he ata coat is remarkable for its eb denfity,. 
and great elafticity. The ftrength of the artery chiefly de- 
ends on it; fo much fo, that if the veffel % evaded 
with a tight ligature, its middle and internal coats will be as 
completely divided by it, as sit Be can be witha knife, whilft 
the external coat will remain e 
Befides thefe proper coats, fhe ‘arteries are conneéted by 
cellular fubftance with fheaths. If an artery be divided, 
the divided parts, owing to theirelafticity, recede from each 
other, and the length of the cellular fibres connecting the 
artery with the fheath admits of its retra€ting a certain way 
within the fheath.” 
Arteries are fupplied with fmall arteries and veins, the 
vafa vaforum, and with abforbents and nerv «This 
ftru@ture makes them fufceptible of every change to which 
living parts are fubjected in common; enables them to in- 
flame when injured, and to pour out coagulating lymph, by 
which the injury is repaired, or the = fe sige: anentl 
clofed.” See Jones on Hemorrh 
o depend upon 2 
efs increafed aétion of the bleeding veflels, brought 
on by fome internal ca 
hemorrhages. 
a ee Dr. Jones, ty sa notions were oe 
tained ; nor were the principles on 5 wich we ought 
fi 
: om article, that the ancients were not entirely —— 
idk thie cixeelation E Hood 
and, ’ 
edt Knowledge of sere be eich! craily 
Ifis recommends, for the purpofe of ftopping bene 
wound to be filled with dry lint, fed ne 
shippelde cola waiac to be applied over the lint, and made 
