Account of the Dissection of a Human Foetus. 47 

 and upper extremities were wanting. There were no vestiges 

 of a brain, nor was there any liver. The dissection of The 

 blood-vessels does not appear to have been very accuratelv 

 made; but, from the general account, I should suppose that 

 the circulation did not materially differ from that of the foe- 

 tus which I have described. 



Another instance of this kind is described by M. Win- 

 slow *. 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, stomacli, 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 opening into the aorta, and the umbilical ar- 

 teries arising nearly as usual. In this instance there was a 

 circle of vessels formed by the arteries only, for M. Wins- 

 low expressly stales, that there were no veins ; and however 

 extraordinary this may appear, we cannot be otherwise than 

 cautious in denying an observation made by an anatomi&r 

 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. O-rie of thenj 

 was a well-formed child of the usual size ; but the other was 

 only twelve inches and a half in length. The head of tlie 

 latter was very imperfect, and there was only a verv 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 umbilica! 

 arteries had iheir origin from the internal iliac, as usual. 

 There is, however, an obscurity in the account of the circu- 

 lation, as it is Slated that there were veins, but they were 

 not traced, nor was any communication made out between 

 ihem and the arteries, or the vessels of the chord. 



Dr. Clarke J has given an account of a case, in which a 

 woman, after a natural labour, was delivered of a hcalthv 

 child, and also of a substance covered by coramou intemi- 



»■ H.\U,iTe d( t Armlimie Royak dt's ftcicnc,-;, 17-10. 



\ Phiioiophi<.ariraiJ4actioiis for )7(;7. | Ibid, lor 179:3. 



