blood receives more than the 
duced; and, in the oppofite: 
intereftin 
future part of the article ; they have howeve’ 
. WEA KT: | ea 
,» in 
feparate fluids very different 
The cutaneous 
oe 
wt 
° 
an af dif 
Jungs and the fkin are three inlets, throug which, in many 
n into the veins, occafion evacua- 
fimilar fubftances 
fkin. Th 
phyfiologilis have completely efta- 
m convinced that it is poflible to com- 
als by introducing various fubftances 
difeafe enfues. 
red expends, plethora js pro- 
ftate, the humours are faid to 
be impoveriftied.”” Be 
The preceding extra will fhew. the reader the new and 
_ int of view in which the important function of 
citculation is reprefented by Bichat: we, thall proceed to a 
more detailed account of the matter, flill adhering to the 
arran 
the French phyfiologi 
b r - 
. eins of the body at large, which will be confidered ee 
ever no valves. 
thefe veffels will 
le‘ and ventricle, 
through which the blood paffes in its courfe 
tree of this fyitem tothe fecond, will be defcribed in 
a future part of this article in the general account of the 
‘The firft tree of the red blooded circulation, the trunk of 
i nnects 
the fecond, and the heart which conne 
of the 
bod 
+x 
* 
thefe together, are 
rated in the cavity of the chelt ; while the branches 
| fecond trunk are difperfed through all the organs of. 
the economy, and reach to all the extreme points of the 
organ of motion of the red blood, of the hieart, is 
about the upper part of the middle third of the 
* 
* 
ement, and making confiderable ufe of the opinions of ve 
Hence, in the gangrene of old age, and im oth 
arifing from the blood being propelled with diminified force 
to Lif parts of the body, the toes are rft-affected, and the 
hands are much feldomer and later attacked in this way. In 
neral there are very numerous differences between the phe- 
nomena exhibited in the upper parts of the body, and thofe 
which take place in the lower. In the integuments we find 
that portion of the gereral capillary fyftem, which belong» 
to the former, infinitely’more fufceptible of diftenfion with 
‘blood, than that of the latter; as is proved by afphyxia, 
apoplexy, drowning, the various cutaneous afiv@tions, and 
even injeCtions. ‘'hefe differences may obvioufly be referred 
to the relative pofition of the upper and lower parts of the 
body to the heart."’ . 
circular valves’ which they fupport. 
reach to the mufcular fibres of the ventricle, fince there is 
or three Imes clofed by. the. 
re are three {mall trjangular 
and the valves, filled in the fanie 
In order to obferve this firu€ture 
outfide, and carefully cleaned from the furrdunding adipous 
‘matter. Then; by flitting up the ventricle an ery, 
after ue the valve, and obferving their union 
againft the light, the ftructure now defcri mc 
he heart would be 
at their nature is different, 
all that credit on the ground of originality, which he himfclf 
Haller gives the following defcrip- 
lm arteriam 
8. 
nulla cordis fi 
lib.'4) RE 3s §. 
om the. 
i 
