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 

 circum fiances, and from what I am about to obferve in the 

 next feftion, that he mifund^rftood the direction in which the 

 blood was moved and circulated. 



Of the DirrSiion of the Blood in this Monjier. 



As there are two kinds of vefiels 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 blcxl 

 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 thefe branches, we found, 

 every where, other vefTels which formed a trunk or large velfel, 

 which, by its iituation, refembled our aorta. But we muft 

 fuppofe, that thfe branches ferved the purpofe of receiving 

 the blood from the extremities of the branches of the umbilical 

 vein, or were in reality venous vefiels. From the veflel re- 

 fe-.nbling the aorta in fituation, but very different in office, two 

 vetTels were fent off, which ran at the fides of the bladder to 

 the umbilicus, and formed the arteries of the umbilical cord 

 and of the placenta, and, in the placenta, muft have terminated 



\ ol. III. H in 



