HUMAN MALE MONSTER. 225 
defcribes it as fending branches downwards from the abdomen 
to the inferior extremities, and upwards from the thorax to the 
head, and applies the name of carotid arteries to two of thefe 
branches, with the additional remark, that the canales carotici 
were wanting, it will, I apprehend, appear evident from thefe 
circumftances, and from what.! am about to obferve in the 
next fection, that he mifunderftood the dire@tion in which 
blood was moved and circulated. 
Of the DireGion of the Blood in this Monfter. 
As there are two kinds of veflels in the umbilical cord, and 
likewife within the body of this monfter, which we fhall call, 
in the common ftyle, arterious and venous, we cannot doubt, 
that thefe communicated with each other, and that the blood 
was conveyed by them in a circle. 
To defcribe the circle more exactly, we cannot doubt, that 
the blood was conveyed from the placenta by the umbilical 
vein into the body of the monfter. We next found, that the 
umbilical vein within the monfter was divided into various 
branches, which could be traced to all its parts, or that thefe 
branches performed the office of arteries. or refembled the 
* vena porta hepatica. Contiguous to thele branches, we found, 
every where, other veffels which formed a trunk or large veilel, 
which, by its fituation, refembled our aorta. But we mutt 
fappofe, that thefe branches ferved the purpofe of receiving 
the blood from the extremities of the branches of the umbilical 
vein, or were in reality venous veflels. From the veflel re- 
_ fembling the aorta in fituation, but very different in office, two 
veflels were fent off, which ran at the fides of the bladder to 
me the umbilicus, and formed the arteries of the umbilical cord 
and of the placenta, and, in the placenta, muft have terminated 
Vou. III, Ff in 
