i66 Mr. Brodie’s Account of the Dissection 
Another instance of this kind is described by M. Winslow.* 
This was also a twin, only seven inches in length. The age 
and size of the other child are not mentioned. In this instance 
there was no head, nor any vestige of brain. There were no 
lungs, liver, stomach, nor spleen, and only a small portion of 
intestine. The arterial system is described as being complete, 
communicating with the placenta by the umbilical vein open- 
ing into the aorta, and the umbilical arteries arising nearly as 
usual. In this instance there was a circle of vessels formed 
by the arteries only, for M. Winslow expressly states, that 
there were no veins ; and however extraordinary this may ap- 
pear, we cannot be otherwise than cautious in denying an 
observation made by an anatomist, so remarkable for his 
extreme accuracy and minuteness. 
Dr. Le Cat of Rouen, states another case of twins -f born 
at the end of the ninth month of pregnancy. One of them 
was a well formed child of the usual size ; but the other was 
only twelve inches and a half in length. The head of the 
latter was very imperfect, and there was only a very minute 
portion of brain. The heart, lungs, liver, stomach, and spleen 
were entirely wanting, and there was only a small portion of 
intestine. The arterial system was perfect; the umbilical 
vein terminated in the aorta, and the umbilical arteries had 
their origin from the internal iliac, as usual. There is, how- 
ever, an obscurity in the account of the circulation, as it is 
stated that there were veins, but they were not traced, nor 
was any communication made out between them and the ar- 
teries, or the vessels of the chord. 
* Histoire de VAcademie Roy ale des Sciences, 1740. 
f Phil. Trans, for 1767. 
